Low Density memories for T600E ? *MANY PICS*

[fje]

Hi, there...

I don't know if this is the best place for asking this question or it could better fit in the "Legacy ---- T600 --- thread", should the admin feels that one is a better place, please, move it to there.

I'm trying to upgrade an old but still valuable T600E Thikpad. I read several forums about how to do it, specially the processor part.

I also want to upgrade the memory (today 256+32Mb) to 512Mb and I'm very aware that the new memories have to be "low density" ones. Looking into eBay I found several offer, one of them could be interesting, but looking to the picture it includes, I found that even it is marked with a label saying "low density", the card only has 8 chips per side, so I put him the following question:

"Hi, you claim the related item is "low density" memory (which is needed for a Thinkpad 600E, for instance), but the the item in the picture you include seems to have 4 chips per side (even in the label it is written "low density") and, as far as I know, the "low density" 256MB memories have 8 chips per side... Please, could you clarify?"

And he answered:

"These are 8 chip, but are built with 16 bit chips. 16 chip modules are built with 8 bit chips, so these chips are addressed twice and read as 16 chip low density. "

Does this make sense? I am not knowledgeable enough of technology. Will they work on our 600E?

Thanks !

[rkawakami]

Welcome to thinkpads.com!

I believe that 600E systems should be able to go to 544MB (32MB on board, plus two 256MB low density modules); possibly requiring the latest BIOS version. You are correct to assume that low density modules can be identified by those having 16 (total) chips.

As far as the eBay seller's explanation, it doesn't make too much sense. The difference between low and high density modules is basically a change in the refresh specifications between two chip designs; 4K (low density) vs. 8K (high density). Some of that is due to addressing concerns. As of now, I am not aware of any 8-chip 256MB PC66/PC100/PC133 SDRAM SODIMMs which have the 4K refresh required by the 600E. Can you provide the eBay item number so we can take a look? If you don't want to provide it publicly (for fear of having others bid on it), you can PM me.

[fje]

rkawakami

thanks for your fast answer, I'll pm the url of the item to you...

Thanks for your help.

Javier

[fje]

Well, I just got the memories, but my experience for the moment is:

1.- To be known that I was not able yet of having the bus speed changed to 100MHz. My 600E has one of the very old mainboards and the processor change to PIII/600MHz is not enough for changing the bus speed, I have to do some work on the hardware (in the IMI SG577 circuit) for having it at 100MHz. So, at this moment the bus is still 66MHz.

2.- The memories I got are low density (vendor words), no brand, and 133MHz, compatible with 100MHz (vendor words too).

3.- I took out the two 128Mb 66MHz memories I had in the laptop and put one of the new 256Mb I got. System starts, recognizes the new RAM (total of 256+32=29xMb) but stop there with some kind of "top-top-top-....." noise.

4.- I did the same with the other new one and same result. And I did both tests in both RAM connectors, same result.

5.- If I put one of the new 256/133 and one of the old 128/66 system recognizes both of them (256+128+32), but it does not go further again.

6.- If I put the two new ones, the system seems not to find the memories, neither the "base 32Mb" one, no RAM amount is displayed.

7.- Finally if I disable the "base 32Mb (66MHz)" memory and leave one of the new 256/133, system does nothing.

Question then is: Can I assume this behaviour is the one to be expected for having still the bus at 66MHz and that the new memories are 133/100MHz? Can I expect that when the bus will run at 100 (or 108) MHz system will boot at expected?

BTW, I put back the original 2x128Mb/66MHz and the system booted up again (ufffff!!!!!)

Thanks.

Javier

[rkawakami]

With your description on how the systems boots (and sounds) with those two new modules, I would have to say that they are high density versions and therefore will not work inside a 600E (or even a 100Mhz front-side bus 600X). I also don't believe that changing the bus speed from 66Mhz to 100Mhz on your 600E will allow those modules to work.

Looking at the eBay auctions that the vendor is running, I became very interested in the claims of compatibility with these modules with Thinkpads that are known to require "low density" memory. The picture supplied with the auction shows an 8-component module (assuming that for the moment since there's 4 parts on one side) with a label indicating "low density". They are also using the 33L3069/33L3070 FRU in the description. So interested, that I bought one so I can run some tests on it. This is what I submitted in a message to the seller:

Hi! I'm purchasing this module for use inside an IBM Thinkpad 600E. According to your auction description, this module should be compatible with my TYPE 2645 system.

I'll let you know what I find out when I get this.

[fje]

Hi, rkawakami,

thanks for your fast anser... BUT...

I finally didn't buy the ones we spoke about. I bought these ones:

http://cgi.ebay.es/ws/eBayISAPI.dll?Vie ... IBSA:ES:11

and, remember your comments about the low density and the number of chips, I interchanged several mails with the vendor. If you give your mail address to me via pm, for instance, I can send them to you.

FYI information, the first thing they guarenteed to me is that they were LOW density, but, at the same time, said that "take care because IBM is somehow "pricky" with the brands of the memories...".

They also seem to be very honest, as soon as I told them that the memories didn't work with my laptop as it is, they already offered refund. But I proposed to them to wait till I have the bus at 100MHz.

Are you sure that even being 133/100MHz they had to work with the 66MHz bus?

Thanks again and waiting for your e-mail.

Javier

[rkawakami]

Sorry for the delay in getting back to you. I was busy with some testing and posted this last night:

http://forum.thinkpads.com/viewtopic.php?t=68523

The module I received from 1-800-4-memory indeed only has eight devices AND does work in my "low density" systems .

I don't think that altering your system bus speed from 66Mhz to 100Mhz would allow those modules you bought to work. Take a look at that thread I started and review the pictures at my web site:

http://www.kawakami-ca.com/8_chip_low_d ... mb_sodimm/

[Keyhole]

I also have IBM ThinkPad 600E 2645-4AU. It has 544MB of RAM. I using two Samsung 256MB PC100 SODIMM low density memory right now as we speak.

Here is the image link for Micron:



Also, here's some info for Micron:

MT16LSDF3264HG-10EE4 AVA 256MB 144p PC100 CL2 16c 16x8 SDRAM SODIMM T017 RFB U.S, Micron

Here is the image link for Samsung:



Also, here's some info for Samsung:

M464S3254BT1-C1H AEC 256MB 144p PC100 CL2 8c 16x16 SDRAM SODIMM

I got the source info from http://www.memoryten.com

http://www.memoryten.com/000934.htm and http://www.memoryten.com/001595.htm

It will work in your ThinkPad 600E.

[rkawakami]

@Keyhole: Welcome to thinkpads.com! (well, uncloaking at least ).

I'm curious concerning how the Samsung modules are running in your 600E. All of the datasheets that I can find on that particular part number says that the refresh spec is 8K (for every 64mS). This means that a refresh cycle must occur every 7.8uS (64mS/8192). Normal "low density" memory has a 4K refresh specification. That works out to a refresh every 15.6uS. The Intel 440BX datasheet lists that value as the fastest that it can support.

I'm assuming that you see 544MB listed on the screen during POST. What does Windows report (Control Panel/System), as well as a memory diagnostic program such as memtest86+?

ref: http://www.datasheetarchive.com/M464S32 ... sheet.html
ref: http://download.intel.com/design/chipse ... 063301.pdf (440BX chipset doc; page 3-19 lists the refresh spec)
ref: http://www.memtest.org/#downiso (download area for memtest86+)

[Keyhole]

rkawakami,

I'd been using my ThinkPad 600E 2645-4AU about four (4) months now since I upgraded from 288MB to 544MB of memory (I have the laptop for over two (2) years running on maximum RAM (288MB). I should have known back then.

Anyway, I right-click "My Computer" icon on the desktop and select "Properties" and it showing 544MB of RAM and I pressed "Ctrl+Esc" and then Run and typed "dxdiag" and enter. It also showing 544MB of RAM too.

Then, I ran the program "Belarc Advisor" (I love this program and it is the best and I can't leave home without it). It also showing

544 Megabytes Installed Memory.
Slot 'DIMM 0 ' has 32 MB
Slot 'DIMM 1 ' has 256 MB
Slot 'DIMM 2 ' has 256 MB

I have also disabled the prefetching, cache, and virtual memory (paging file) and I noticed a huge difference in performance in Windows XP Professional. When I shut down my ThinkPad 600E, it turns off within ten (10) seconds. (WOW)

If I learned that my ThinkPad 600E runs on 544MB of RAM, I would be disgusted at the performance 288MB of RAM it put out. Now I understand why computer manufacturers want consumers to buy new computers because they don't want them (consumers) to upgrade it. I known several computer techs work in repair shops (not Best Buy's Geek Squad - they want you to buy a new computer). Check out the video if you get a chance, Getting Gouged by Geeks: http://www.cbc.ca/marketplace/2007/10/03/geeks/

Anyway, like I said, the computer techs I know says if the computer's maximum memory is 512MB (two 256MB PC133 chips), try to see it will accept 1GB (two 512MB PC133 chips). Same thing with computers with 256MB maximum memory (some will go up to 512MB of RAM depending on how many slots and the BIOS).

Recently, I had worked on my friend's son Compaq Presario laptop computer and the maximum memory Compaq website support is 384MB of RAM for a Pentium 3; it has 1.0 something gigahertz processor. The laptop is fast but the maximum memory 384MB sucks. It has one slot so I took out 128MB PC133 chip out and replace it with 512MB PC133 SODIMM chip. Guess what? The Compaq laptop's performance flew - it has a total of 768MB of RAM. The guy's son said he like it very much because it's fast and he could do lot of things on the computer thanks to me and he appreciated it.

By the way, I use my ThinkPad 600E everyday - day in and day out. I'm on my laptop right now as we speak. It's been good to me but the appearance on the outside is rough maybe because I use it a lot, but I keep it clean of dust, dirt, and fingerprints. I have been a IBM ThinkPad guy since 1999 and my first ThinkPad is 760EL, and then 760XD (this particular model I have didn't went to space on the Space Shuttle) and it has a video in/out port I used to watch satellite TV and DVD movies on it because I don't have a television set so I use the 760XD for it.

IBM ThinkPad laptops to me are durable, reliable, and work horses and are the Cadillac of all laptop computers.

[fje]

rkawakami,

I'd been using my ThinkPad 600E 2645-4AU about four (4) months now since I upgraded from 288MB to 544MB of memory (I have the laptop for over two (2) years running on maximum RAM (288MB). I should have known back then.


I have also disabled the prefetching, cache, and virtual memory (paging file) and I noticed a huge difference in performance in Windows XP Professional. When I shut down my ThinkPad 600E, it turns off within ten (10) seconds. (WOW)


IBM ThinkPad laptops to me are durable, reliable, and work horses and are the Cadillac of all laptop computers.

Hi, what do you mean when you say "I have also disabled "virtual memory (paging file) and noticed a huge difference in performance in Win XP..."? How can Win XP work with paging disabled?

BTW, I fully agree with you regarding your last sentence, but do not mix "old IBM Thinkpads" with "new non IBM Thinkpads" Lenovo ones.... How much time will Lenovo stay with the IBM Thinkpads?

Rgds.

[Keyhole]

I'm apologize for the last statement about IBM ThinkPad laptops to me are durable, reliable, and work horses and are the Cadillac of all laptop computers. I meant was before Lenovo brought IBM ThinkPad name.

Now regards to using Windows XP with paging disabled; it saves wear and tear on the computer's hard disk drive because Windows XP don't have to swap paging file between the memory and the hard drive frequently.

If it has a large hard drive, for example: 20 gigs or more - split the partitions in half (2) or in quarters (4). First partition "C" drive is for the operating system and the second partition "D" drive is for data files like the stuff in the "My Documents" folder and other files too. The computer will operate a lot faster if it is split into multiple drives or partitions like my ThinkPad and my friend's and customer's computers I have previously worked and they have no complaints regarding faster performance.

20GB Hard drive: Two partitions, 10GB each "C" and "D" only

30GB Hard drive: Two partitions, 10GB for "C" and 20GB for "D"

40GB Hard drive: Three partitions, 10GB for "C" and 15GB each for "D" and "E"

80GB and up Hard drive: Four partitions, "C", "D", "E, and "F"
Note: 10GB for "C" partition and "D", "E, and "F" (split the total partition size equally among three "3" partitions).

Note: The operating system and the installed programs in the "C:\Program Files" depending on what type of software the end users installs, they do not ever reach the hard drive space to 10GBs and its stay around five (5) GB of space if you use CCleaner program Link: http://www.ccleaner.com/.

Anyway, if something happens with the operating system on the "C" partition your data will not be corrupted and wiped out when you reformat and reinstall the operating system because all the data is on "D" partition. It is like a house with rooms in it, if the kitchen catches on fire, it won't spread into the other rooms or other part of the house if the fire is contained in the kitchen and put out.

Regarding Windows XP Performance with paging disabled, I have included several links below.

Disable Paging the Executive to improve performance http://www.metron-athene.com/reference/ ... tip23.html

Memory Performance Tweak http://www.tweakxp.com/article37016.aspx

So, if the computer have 512MB of RAM or more you should disable paging.

Manage the Windows Prefetcher Service http://www.pctools.com/guides/registry/detail/1160/
Note: I set the "EnablePrefetcher" on mine to zero (0)

Also, I made couple screenshots of the registry settings I have set in Windows XP Professional on my ThinkPad 600E.

[beecee]

I've read all the Q&A's on this topic & can vouch that you need 256mb, Low Density Pc100mhz OR Pc133mhz, 8 chips per side.

I've been down this road many times with 600's

The 256mb (4 chips per side) that you mention, are for older Toshiba & Dell (Possibly others too) Laptops & will not work in the 600 series. I have tried them.

I have used Low Density Pc133mhz Chips alongside Pc100mhz Low Density (all 8 chips per side) in the same 600E & 600X & all worked happily together.

Also, either of the 256mb Pc133 or the 256mb Pc100 256mb modules work alongside a standard, 128mb, 4 chips per side Pc100mhz module.

I don't know the in's & out's of clock speeds etc. I just know what works from experience, trial & error.

A further aside to this, & on a 600X, Pc100mhz or Pc133mhz (Low Density) either 128mb or 256mb will work fine together, but the 600X will not run any Pc66mhz

In the 600 & 600E series, Pc66mhz x 32, 64 or 128mb will work happily alongside any Pc100mhz, but I suspect that the memory would always run at the lower speed.

I'm sure there are many people out there who know more than I can tell you, so please feel free to correct me if you think I'm wrong on any of the above.

[TriAngle]

fje,
I had the same problem; I ordered a 256MB SODIMM, thinking it was "low-density" and it turned out to be "high-density", therefore giving the pops at startup.
The laptop recognizes the RAM, then makes about 10-12 pops, then stops COLD!
That RAM will definitely not work in your laptop.

See my post at:
http://forum.thinkpads.com/viewtopic.php?t=68887

These are "low-density" PC-133 SODIMMS.
I do not know if they will work in your laptop.
They work in my 770X.
Tri.

[Keyhole]

fje, beecee, TriAngle

That is why the no name, memory chips you guys brought on ebay doesn't work in your ThinkPad 600E laptop. Read my previous posts and click on the links.

You guys didn't do your homework enough when comes to upgrade the memory for your laptop. You see I work on other people's computers and when they ask me to upgrade the RAM on their computer. Do you want to know the first thing I did?

What I did was the customer's computer have the original memory inside when they had it when it was new from the store or shipped new from the factory. I took the original memory chips out and photocopy it on the copier machine and put the make and model name next to the images. You could also scan it on the flatbed scanner and print it out on the color printer from the computer.

Then, I will search for two (2) 256MB PC100 SDRAM SODIMM chips in Samsung, Micron, Infineon, or Kingston name using the manufacturer's part number on ebay, Craigslist, or other online store for a decent price and not too expensive.

Also, I will also find them in the local computer repair shops in my area where I live at and sometimes they carry extra used memory for real reasonable price. That's how I got two (2) Samsung M464S3323CN0-L1L for my ThinkPad 600E for $35.00 each at the local computer repair shop. I don't go there to get my laptop fixed, I go there to get used computer parts they gutted out of other computers.

This is the Samsung memory chip I'm currently using in my ThinkPad laptop 600E right now typing away in this forum.

Samsung 256MB SDRAM Memory Module (PC100/ 100MHz/ 144 Pins) - M464S3323CN0-L1L


Infineon 256MB SDRAM Memory Module (PC100/ 100MHz/ 144 Pins) - HYS64V32220GBDL-8-C2


Kingston Technology SDRAM 256MB KTM-TP390X/256 Non-ECC Unbuffered CL3 144-Pin SoDimm Memory Module



Another thing I have learned during the course of working on other people's computers for years is that if the computer's bus speed running 66MHz, it will accept the memory chips of PC66 and PC100 (some computers will accept PC133 chips and some don't). Same thing with computer's bus speed running 100MHz, it will also accept the memory chips of PC100 and PC133 (some computers will not accept on PC133). It is all trial and error to see the particular computer machine will accept it or not.

[TriAngle]

Keyhole,
Yes, homework is crucial. I only made that mistake once, but was able to resale the 256MB Samsung PC100 'high-density' SODIMM to a customer for what I paid for it.

Never, ever, guess at RAM specs. It will always bite you in the bohunkus!

My ThinkPad 770x uses PC66, it also runs PC100 and PC133.
I currently have 64MB IBM PC66 onboard, 64MB SEC PC66 in slot #1, and 256MB Crucial PC133 in slot #2 for a total of 384MB.
All are 16-chip 'low-density' SODIMMs.

[Keyhole]

Keyhole,
Yes, homework is crucial. I only made that mistake once, but was able to resale the 256MB Samsung PC100 'high-density' SODIMM to a customer for what I paid for it.

Never, ever, guess at RAM specs. It will always bite you in the bohunkus!

My ThinkPad 770x uses PC66, it also runs PC100 and PC133.
I currently have 64MB IBM PC66 onboard, 64MB SEC PC66 in slot #1, and 256MB Crucial PC133 in slot #2 for a total of 384MB.
All are 16-chip 'low-density' SODIMMs.

Geez, why are you using your ThinkPad 770x laptop on 384MB of RAM? The performance is got to kill you least; try to replace the 64MB chip with another 256MB memory chip and it will have totaled up to 576MB. By the way, who makes the 256MB memory module you have, anyway? Crucial doesn't manufacture memory chips; they put their own name on it. My ThinkPad 600E I'm using now have total of 544MB (32MB onboard plus two (2) Samsung 256MB PC100 SODIMM SDRAM part# M464S3323CN0-L1L eight (8) chips per side. Does the Crucial 256MB memory chip you brought have eight (8) chips per side?

[Keyhole]

@Keyhole: Welcome to thinkpads.com! (well, uncloaking at least :) ).

I'm curious concerning how the Samsung modules are running in your 600E. All of the datasheets that I can find on that particular part number says that the refresh spec is 8K (for every 64mS). This means that a refresh cycle must occur every 7.8uS (64mS/8192). Normal "low density" memory has a 4K refresh specification. That works out to a refresh every 15.6uS. The Intel 440BX datasheet lists that value as the fastest that it can support.

I'm assuming that you see 544MB listed on the screen during POST. What does Windows report (Control Panel/System), as well as a memory diagnostic program such as memtest86+?

ref: http://www.datasheetarchive.com/M464S32 ... sheet.html
ref: http://download.intel.com/design/chipse ... 063301.pdf (440BX chipset doc; page 3-19 lists the refresh spec)
ref: http://www.memtest.org/#downiso (download area for memtest86+)

I made a mistake posted a wrong picture of the Samsung 256MB PC100 SODIMM SDRAM chip. I didn't realize the picture I posted have four (4) chips per side instead of eight (8) chips per side. My apologies and I must be tired that night. This is the right Samsung 256MB PC100 SODIMM SDRAM chip with eight (8) chips per side.

[fje]

rkawakami:

Great job the one you did !!!! I had a look to it and it is a very valuable and important test and explanation of why we can have "low density - 8 chips" memories working....

Keyhole and beecee:

You may be right, but if you also have a look to the work done by rkawakami, you will see that there can be some modules of 8-chips that work on "low-density" requesting laptops as the 600E (he tested it....)

http://www.kawakami-ca.com/8_chip_low_d ... mb_sodimm/


As I said in a previous post (not sure in this thread or in the 600E upgrade one...), the eBay seller ("smilentango") that sold me the memories was very helpful and responsive and as soon as I told them the problem I had, told me to send back the modules I got and that he would send me new ones (hopefully this time they will work). In fact, the new ones should already be on their way to me.

As soon as I will have them in my hands, I'll test them and will update these threads with my experience. Hopefully it will be at least as the rwakakami one....

And then, having the 544Mb working, I'll test the "paging disabled" mode in the WinXP mode that Keyhole suggest.

Regards to all.

[TriAngle]

Keyhole,
Here's a photo (cell phone) of the SODIMM.

Crucial CT436441 (CT32M64S4W7E.16FGY) 256MB 144-pin Low-Density Non-parity CL2 32Mx64 3.3V SODIMM

http://i133.photobucket.com/albums/q49/ ... o-0027.jpg

Mfgr.: Crucial (Micron Technology)
P/N: CT436441
Material#: CT32M64S4W7E.16FGY
Price: $36.99 + $3.99 S/H = $40.98
* If you order 2, the S/H is FREE!

Type: Low-Density (16-chip)

Upgrade for a Sony VAIO PCG-FX210 Laptop

Label #1 on SODIMM:
Crucial BG11 268.ZL 200840MT
CT32M64S4W7E.16FGY 64092
256MB 144-PIN SODIMM 32M64 PC 20
256MB 144-PIN SODIMM 32MX64 PC133 CL2 Pb-FREE (Lead-Free)

Label #2 on SODIMM:
MT16LSDF3264HY-13EG4 200840 BZAE9JP002
PC133S-222-542Z
256MB, SYNC, 133MHz, CL2

Chipset Info: (there is no brand name on the chipsets)
One one side of SODIMM -
8SG31
D9DJG

One the other side of SODIMM -
8PG31
D9DJG

The SODIMM has 8 chips per side; 6 across the bottom, and 1 in each upper corner, for a total of 8 per side/16 total.

This is an actual upgrade for my Vaio PCG-FX210 that currently runs 2 Crucial 256MB PC100 'low-density' SODIMMs, as Crucial does not sell PC100 SODIMMs any longer.

This PC133 SODIMM works perfectly in my PCG-FX210 and in my ThinkPad 770X.

If I was keeping the ThinkPad 770X, I would install 2 of these Crucial 256MB PC133 'low-density' SODIMMs in it, but as it is for sale, I must keep my overhead down, to make a slight profit.

If you order this SODIMM, search for the Crucial P/N: CT436441 as an upgrade for the Sony Vaio PCG-FX210

Hope this helps.

[Keyhole]

Keyhole,
Here's a photo (cell phone) of the SODIMM. <snip>
Hope this helps.

TriAngle, that is why I don't use Crucial Memory because they they don't carry everything on their website and most older computers running the bus speed of 100MHz generally are picky because they will accept PC100 and not PC133 (some do) due to the OEM BIOS in the computer. If your Sony laptop have the original memory installed in it shipped from the factory that have PC100MHz chips, I'll stick with PC100MHz memory upgrades.

Next time you looking for memory upgrades for your computers, go to http://www.memoryten.com. They carried PC66, 100, and 133's memory chips for older computers. Just look at the pictures of the memory chips and get the part numbers for Micron, Samsung, Infineon, and Kingston and google it on the web for the prices.

Did you update your BIOS for your Sony VAIO PCG-FX210?

Here is the link below.

Sony eSupport site

By the way your Sony VAIO PCG-FX210 takes PC100 only, I read the User Manual in PDF file from Sony esupport website (see link below).

https://www.docs.sony.com/Release/PCGFX ... e=127&mdl=

And like I said in my previous posts and replies, I use Samsung 256MB PC100 SODIMM 144-pin SDRAM (M464S3323CN0-L1L) and Micron 256MB PC100 SODIMM 144-pin SDRAM (MT16LSDF3264HG-10EE4) because they are common and easy to find on the Internet and in the local computer repair stores if the prices are reasonable.

This is a ThinkPad forum and NOT a Sony VAIO forum, I don't want to get blasted by the moderators and administrator of this forum.

Admin edit: Trimmed quote and shortened URL to prevent horizontal scrolling. Mentioning Sony (or Apple, Dell, HP, et al.) will not get you blasted. In most cases . And I think you mean Micron MT16LSDF3264xxx for 256MB PC100 SODIMM. The "16" means that it has 16 devices on the board. The "MT8" board will only have 8 parts.

[fje]

You can look at my last update in:

http://forum.thinkpads.com/viewtopic.ph ... &start=120

Now, I'm waiting for the new memories that the eBay seller is resending to me, hopefully they will come to my hands in the coming weeks.

As soon as I'll have them, I'll test them in my 600E and will also test the "disable paging" suggestion of keyhole and will update this forum with my findings.

[fje]

I tried twice, the eBay vendor is a very good one and exchage me the first ones they sent, but same result. Now they are refunding me the full selling price...

He tells me that my 600E model 2645-550 DOES NOT accept 256Mb memories, only 128 ones as maximum. But I feel to have read some one with the same model to be succesfull installing 256Mb ones.

Is there anyone that could confirm to me that 2645-550 is able to run with 256Mb memories? If yes, which brand or part number has been used?

Thanks so much

Javier

[Mod edit: Duplicate posting in Official Upgrade Thread has been removed: either stick in this thread or start a new one, but don't try to carry on two threads on the same topic at the same time.]

fje edit I understand that one shouldn't duplicate posts, but I felt this thread was the one where this discussion was mainly maintained, but, at the same time, the "Official Uprade" one was the one that (as it was my case) most of the people that is planning to do upgrades would look at. This was the reason for doing it. Might be it was better to put the post here and a refer to it in the other. Will do next time...[/b]

[Keyhole]

I tried twice, the eBay vendor is a very good one and exchage me the first ones they sent, but same result. Now they are refunding me the full selling price...

He tells me that my 600E model 2645-550 DOES NOT accept 256Mb memories, only 128 ones as maximum. But I feel to have read some one with the same model to be succesfull installing 256Mb ones.

Is there anyone that could confirm to me that 2645-550 is able to run with 256Mb memories? If yes, which brand or part number has been used?

Thanks so much

Javier

[Mod edit: Duplicate posting in Official Upgrade Thread has been removed: either stick in this thread or start a new one, but don't try to carry on two threads on the same topic at the same time.]

fje,

Why do you insist dealing with this vendor? I told you in my recent posts that my ThinkPad 600E 2645-4AU accept two (2) Samsung 256MB PC100 SODIMM 144-pin SDRAM (M464S3323CN0-L1L). Check out the ebay links below And look at the pictures.

http://Search Results for M464S3323CN0-L1L

http://256MB PC100 Memory 144pin SDRAM SODIMM Laptop RAM

http://33L3070 Samsung 256MB Laptop Memory M464S3323CN0-L1L 33

http://256Mb PC100 16 chips 144-pin SODIMM SDRAM LAPTOP MEMORY

[fje]

Keyhole,

I tried the first time because they told me their memories were compatibles. The second time because they offered me interchange with new ones.

I'll try now with the links you offer me (thanks for it!!!), but my question is: will the 2645-550 accept 256 MB memories? Because I have been told that NOT ALL the 600E accept them, and being my 550 one of the earliest ones (in fact I had to do the hardware mod to have it running at 100MHZ), I'm not so sure that it will accept them.

Edit:

I had a look to the ones you suggest and, only one of them ships out of USA, I'm in Spain, so, only the last one is valid for me, and, by the way, it is highly expensive, the item price and the shipment. Anyway, I'll try the first link you offer and try to find some other one more affordable and that ships to Spain.


Thanks again

[Keyhole]

Keyhole,

I tried the first time because they told me their memories were compatibles. The second time because they offered me interchange with new ones.

I'll try now with the links you offer me (thanks for it!!!), but my question is: will the 2645-550 accept 256 MB memories? Because I have been told that NOT ALL the 600E accept them, and being my 550 one of the earliest ones (in fact I had to do the hardware mod to have it running at 100MHZ), I'm not so sure that it will accept them.

Edit:

I had a look to the ones you suggest and, only one of them ships out of USA, I'm in Spain, so, only the last one is valid for me, and, by the way, it is highly expensive, the item price and the shipment. Anyway, I'll try the first link you offer and try to find some other one more affordable and that ships to Spain.


Thanks again

fje,

Here is a ebay link below in spanish (I don't read or speaks spanish). All I did was I went to ebay home page and select "Spain" and it took me to a ebay spanish site. I typed "M464S3323CN0-L1L" in the search box and here is the results.

http://Resultados de la búsqueda

http://SAMSUNG 256MB RAM Notebook 100MHz 16 Chips Doublesided

http://Samsung 256MB PC100 CL2 SDRAM Laptop Memory(250320148048)

http://Samsung 256MB PC100 CL2 SDRAM Laptop Memory(250320149714)

Another thing: Here is an ebay links in english and there are both in UK.

http://Samsung 256MB PC100 CL2 SDRAM Laptop Memory(250320148048)

http://Samsung 256MB PC100 CL2 SDRAM Laptop Memory(250320149714)

[fje]

Thanks again!

I'll look for all of them and also for the search method you give to me.... I also sent question to the seller to be sure they are compatible with the 2645-550 model.

And if they are, the budget (price) will be determining what and when I'll order them.

[Keyhole]

Thanks again!

I'll look for all of them and also for the search method you give to me.... I also sent question to the seller to be sure they are compatible with the 2645-550 model.

And if they are, the budget (price) will be determining what and when I'll order them.

fje

Just ask them if the memory you about to purchase have 8 chip per side (16 chips total) and PC100 only not PC133.

Also make sure they email the picture because majority of vendors do not update the pictures, they use one (1) blanket picture for all the PC100 memory they sell.

Then make sure it is a "known brand name like Samsung, Micron, Infineon, and Kingston".

[fje]

Keyhole, thanks for the suggestions... I'll follow them. But for budget reasons, I'll have to wait till the end of the month. Hopefully I will still find some opportunities in eBay as the ones there are just now.

Looking in your previous posts you said you are running just now Samsung ones, but if I look for the p/n you give to me, will I find also the other known brands as Micron, Kingston, etc?

(Provided it is possible at that moment to find them in eBay, that just in this moment there are none... hopefully the stocks are being updated and this is the reason for it).

Rgds.

[tfflivemb2]

He tells me that my 600E model 2645-550 DOES NOT accept 256Mb memories, only 128 ones as maximum. But I feel to have read some one with the same model to be succesfull installing 256Mb ones.

Is there anyone that could confirm to me that 2645-550 is able to run with 256Mb memories? If yes, which brand or part number has been used?

As I just began reading this thread, I was looking for your model 600E. I can tell you that I have run into problems with these 600Es. They have a different BIOS than the 4AU that the other poster mentioned. It is definately an older model Thinkpad.

Here are the affected models: 600E (2645-55x,A5x) The thing to look for is the 5's in the last three digits.

I had nothing but failure using several known working PC100 Low Density ram sticks in my 2645-55U. I was able to get the same sticks to work in my 600E 2645-8BU, and other models, such as the 4AU like the other poster mentioned....