Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message

Is 600x 650mhz a unicorn?

Older ThinkPads.. from the 600, the 7xx, the iSeries, 300, 500, the Transnote and, of course, the 701
Post Reply
Message
Author
Jefferson
Freshman Member
Posts: 76
Joined: Fri Dec 03, 2010 6:05 pm
Location: Denver, CO

Is 600x 650mhz a unicorn?

#1 Post by Jefferson » Tue Apr 09, 2019 8:35 pm

I've been lurking here and Ebay for speed-step enabled 600X but with no success.

I know they exist per various references and documentation but do they really exist?

Does anyone actually own one? Better yet, anyone tried putting 800mhz p3 in one of those?
:banana:
With the original box and documentation : 600, 380XD, 385XD, X24, X30(10th Anniv), T42p, T43, R52, W700ds
Without : 385XD, 600X, 770X, W701, T420, T430, T520, X230
Not working & for parts : At least a dozen
Other laptops : Dell, Alienware, Lenovo
:banana:

Thinkpad4by3
Senior ThinkPadder
Senior ThinkPadder
Posts: 2670
Joined: Sun Aug 09, 2015 9:25 am
Location: N. Bellmore, ny

Re: Is 600x 650mhz a unicorn?

#2 Post by Thinkpad4by3 » Tue Apr 09, 2019 8:54 pm

1) They are definitely less common then their 450/500Mhz counterparts, but not a unicorn. I'd say probably one every few weeks or so. Usually need to look for the specific type number as the Mhz is almost always listed wrong or not at all.

2) I believe people have and it works at full speed.

3) here is your "unicorn" for a good price: https://www.ebay.com/itm/Vintage-IBM-Th ... ctupt=true
It is listed under 500Mhz, but if you look at the type number it is a 9FU model, clearly a 650Mhz model.
Thinkpad4by3's Law of the Universe.

The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

ajkula66
SuperUserGeorge
SuperUserGeorge
Posts: 17055
Joined: Sun Feb 25, 2007 11:28 am
Location: Brodheadsville, Pennsylvania, USA

Re: Is 600x 650mhz a unicorn?

#3 Post by ajkula66 » Tue Apr 09, 2019 9:02 pm

Jefferson wrote:
Tue Apr 09, 2019 8:35 pm
Better yet, anyone tried putting 800mhz p3 in one of those?
Forum member jamiphar modded his to 1GHz probably about a decade or so ago...that system had a few other mods as well. I haven't heard from him in years, but I'm reasonably certain that there are posts addressing the mod in question somewhere on this forum...
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

FlexView AARP club members:A31p, T43pSF

Abused daily: T520, X200s


PMs requesting personal tech support will be ignored.

Thinkpad4by3
Senior ThinkPadder
Senior ThinkPadder
Posts: 2670
Joined: Sun Aug 09, 2015 9:25 am
Location: N. Bellmore, ny

Re: Is 600x 650mhz a unicorn?

#4 Post by Thinkpad4by3 » Tue Apr 09, 2019 9:10 pm

ajkula66 wrote:
Tue Apr 09, 2019 9:02 pm
Forum member jamiphar modded his to 1GHz probably about a decade or so ago...that system had a few other mods as well. I haven't heard from him in years, but I'm reasonably certain that there are posts addressing the mod in question somewhere on this forum...
Can't find any one specific thread about it but the general gist seems to be a 750/850Mhz module that was desoldered and a 1Ghz die put on. He had access to a reballing and BGA soldering machine but I doubt Jefferson has that...so 850 is the limit I believe without diving too deep into OC hell.
Thinkpad4by3's Law of the Universe.

The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

ajkula66
SuperUserGeorge
SuperUserGeorge
Posts: 17055
Joined: Sun Feb 25, 2007 11:28 am
Location: Brodheadsville, Pennsylvania, USA

Re: Is 600x 650mhz a unicorn?

#5 Post by ajkula66 » Tue Apr 09, 2019 9:28 pm

Thinkpad4by3 wrote:
Tue Apr 09, 2019 9:10 pm

Can't find any one specific thread about it but the general gist seems to be a 750/850Mhz module that was desoldered and a 1Ghz die put on. He had access to a reballing and BGA soldering machine but I doubt Jefferson has that...so 850 is the limit I believe without diving too deep into OC hell.
I wouldn't know. 600 series were never my thing, although I've owned more than my fair share of them. Folks who have really toyed with those are mostly gone from the forum, with the possible exception of pkiff who likely knows a thing or two about these mods...

Back in the day, James performed a couple of miracles on my behalf with his BGA equipment, and God bless him, he had the patience of a saint when dealing with silly old me... :D
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

FlexView AARP club members:A31p, T43pSF

Abused daily: T520, X200s


PMs requesting personal tech support will be ignored.

Jefferson
Freshman Member
Posts: 76
Joined: Fri Dec 03, 2010 6:05 pm
Location: Denver, CO

Re: Is 600x 650mhz a unicorn?

#6 Post by Jefferson » Wed Apr 10, 2019 1:57 pm

Thinkpad4by3 wrote:
Tue Apr 09, 2019 8:54 pm
1) They are definitely less common then their 450/500Mhz counterparts, but not a unicorn. I'd say probably one every few weeks or so. Usually need to look for the specific type number as the Mhz is almost always listed wrong or not at all.

2) I believe people have and it works at full speed.

3) here is your "unicorn" for a good price: https://www.ebay.com/itm/Vintage-IBM-Th ... ctupt=true
It is listed under 500Mhz, but if you look at the type number it is a 9FU model, clearly a 650Mhz model.
thanks for the link. but per screen shot, it seems to be 500mhz version. maybe the motherboard was swapped? who knows... and it seems to have other problems so i decided not to buy it.

the search continues :)
:banana:
With the original box and documentation : 600, 380XD, 385XD, X24, X30(10th Anniv), T42p, T43, R52, W700ds
Without : 385XD, 600X, 770X, W701, T420, T430, T520, X230
Not working & for parts : At least a dozen
Other laptops : Dell, Alienware, Lenovo
:banana:

Jefferson
Freshman Member
Posts: 76
Joined: Fri Dec 03, 2010 6:05 pm
Location: Denver, CO

Re: Is 600x 650mhz a unicorn?

#7 Post by Jefferson » Wed Apr 10, 2019 2:00 pm

Thinkpad4by3 wrote:
Tue Apr 09, 2019 9:10 pm

Can't find any one specific thread about it but the general gist seems to be a 750/850Mhz module that was desoldered and a 1Ghz die put on. He had access to a reballing and BGA soldering machine but I doubt Jefferson has that...so 850 is the limit I believe without diving too deep into OC hell.
nope, i do not have BGA machine :) i know a shop in Korea that can perhaps do the job you are describing but i like my thinkpads be in original condition or as close to it because at this point in time, the performance gain from mods/OC is basically meaningless...
:banana:
With the original box and documentation : 600, 380XD, 385XD, X24, X30(10th Anniv), T42p, T43, R52, W700ds
Without : 385XD, 600X, 770X, W701, T420, T430, T520, X230
Not working & for parts : At least a dozen
Other laptops : Dell, Alienware, Lenovo
:banana:

Jefferson
Freshman Member
Posts: 76
Joined: Fri Dec 03, 2010 6:05 pm
Location: Denver, CO

Re: Is 600x 650mhz a unicorn?

#8 Post by Jefferson » Wed Apr 10, 2019 2:03 pm

ajkula66 wrote:
Tue Apr 09, 2019 9:02 pm
Jefferson wrote:
Tue Apr 09, 2019 8:35 pm
Better yet, anyone tried putting 800mhz p3 in one of those?
Forum member jamiphar modded his to 1GHz probably about a decade or so ago...that system had a few other mods as well. I haven't heard from him in years, but I'm reasonably certain that there are posts addressing the mod in question somewhere on this forum...
way back when 600X could be used for real tasks, i may have done the mod. but these days, i'm struggling to find actual usage for my old thinkpads :) from the activities on this board, i can see that the classic thinkpads are being forgotten...
:banana:
With the original box and documentation : 600, 380XD, 385XD, X24, X30(10th Anniv), T42p, T43, R52, W700ds
Without : 385XD, 600X, 770X, W701, T420, T430, T520, X230
Not working & for parts : At least a dozen
Other laptops : Dell, Alienware, Lenovo
:banana:

pkiff
Moderator
Moderator
Posts: 1541
Joined: Wed May 05, 2004 9:17 am
Location: Toronto, Canada

Re: Is 600x 650mhz a unicorn?

#9 Post by pkiff » Wed Apr 17, 2019 5:50 pm

ajkula66 wrote:
Tue Apr 09, 2019 9:28 pm
I wouldn't know. 600 series were never my thing, although I've owned more than my fair share of them. Folks who have really toyed with those are mostly gone from the forum, with the possible exception of pkiff who likely knows a thing or two about these mods...
Hey that's me!

There were lots of PIII 650MHz 600X's sold directly by IBM. Thousands and thousands, I would guess.

The problem we used to have was finding a PIII 850MHz on an MMC-2 card to upgrade it with, not finding a machine with PIII 650MHz stock. The PIII 850MHz MMC-2 cards used to sell for $100-150 USD. If you were lucky, you could find a cheaper one by buying an entire Dell laptop that came with one. I forget which model, but there was a Dell that was sold with a PIII 850MHz card off-the-shelf. No Thinkpad ever shipped with anything better than an MMC-2 PIII 650MHz.

I have a 600X with an 850MHz installed and another with an 800MHz. And maybe even a third somewhere with 750MHz. I also used up one of those rare PIII 850MHz MMC-2 cards in a Thinkpad 770Z.

If you are going down one of those rabbit holes to get the "ultimate 600X", then one strange quirk of these machines that you should be aware of is that I believe that they without modding, they will not run at their SpeedStep max speed unless you use a battery that has proper, original OEM circuitry. *And* you have to be plugged in to AC power. For a couple years, this led to many people sending old 600 series batteries to be re-built by various 3rd-party vendors. I found that in my machines, the Intel SpeedStep applet would not correctly shift to its max speed unless I had a genuine original IBM battery, or a re-packed OEM battery that had been built out of the original battery, preserving the OEM circuitry but with replaced the cells. There was some debate about this, and I'm not sure it was ever 100% cleared up. For instance, some people running Windows 2000 seemed to be able to reach full SpeedStep speeds with cloned, non-OEM batteries.

As a reminder, the PIII 650MHz on the MMC-2 board is the only CPU for the 600X that comes with "SpeedStep" capabilities. The PIII 850MHz on the MMC-2 board also employs Intel's SpeedStep features. So in order to reach max speed of either a PIII 650MHz or a PIII 850MHz on an MMC-2 board, you would need a SpeedStep aware motherboard, like the one in the 600X PIII 650MHz machine.

However, you could do some kind of soldering mod that would force the SpeedStep clockspeed to always be on high. I never explored those hardware mods, but they apparently worked just fine. And in that case, you could use whatever battery you liked.

I think that the PIII 850MHz runs pretty hot when it is pushed to its limit, and if I recall correctly, the person who got the 1GHz chip to work in their 600X needed to go to some extraordinary lengths with cooling to make their system run stably at 1GHz. They also needed to do something to allow for the 1GHz chip to fit vertically within the space provided. I may have photos or copies of a web post describing that if someone wants it.

But frankly, much as I enjoyed having the 850MHz chips in my machines, I found it was actually very rare that I noticed any difference at all between standard PIII 650MHz performance and PIII 850MHz performance. The difference between PIII 850MHz and PIII 800 was definitely undetectable in regular use. One reason I thought I wanted the extra CPU power was to improve gaming more than number crunching or AutoCAD or video/data processing, and what I eventually realized was that I would get a much more significant boost by putting the machine into one of those SelectaDock III docking stations with a Voodoo 5 PCI graphics card than I would get by upgrading the CPU by a wee bit.

I still have a strong nostalgia for both the maxed out 600X and 770Z Thinkpads and still think they were wonderful, beautiful machines.

Some people ended up working on upgrades to the 600E series instead of the 600X series. I have downloaded copies of the "Mod the Pad" website by someone named David Harvey who provided instructions and photos for how to go about modding the clock on the 600E so that it would run a PIII 850MHz at full speed instead of at the slower speedstepped 700MHz (which was simply 150MHz less than the higher SpeedStepped speed). This allowed folks to get around the sometimes wonky implementation of SpeedStep by the Intel applet that always had to be running in order to reach your max SpeedStep speed. In some ways, I expect that one of those modded 600E's might have been even better than a properly upgraded 600X. Especially if you didn't want to run Windows all the time. But as I say, I never explored that - preferring instead to stay with "stock" upgrades that worked with the sometimes faulty, definitely wonky SpeedStep applet.

Phil.
X1 Carbon Tablet (3rd Gen) · P52 · W520 · Legacy: T60p, X61T, 600X, 770Z
Nostalgic for: 600X PIII 850MHz in a SelectaDock III with 64MB Voodoo 5 5500 and Sound Blaster Audigy 5.1.

pkiff
Moderator
Moderator
Posts: 1541
Joined: Wed May 05, 2004 9:17 am
Location: Toronto, Canada

Re: Is 600x 650mhz a unicorn?

#10 Post by pkiff » Fri Apr 19, 2019 6:49 am

CPU upgrade on mmc2 board?:
viewtopic.php?t=98033
With a few comments from andy2000 about swapping in a 1GHz CPU on an MMC-2 board. And links to non-English boards with further details.

1 gig hz on a 600x:
viewtopic.php?t=103729
Some additional chitter chatter on the topic, including follow-up comments from andy2000.

Additional details about various hardware mods for upgrading the 600E series are still online here:
http://kihwal.fayoly.net/600e/

Phil.
X1 Carbon Tablet (3rd Gen) · P52 · W520 · Legacy: T60p, X61T, 600X, 770Z
Nostalgic for: 600X PIII 850MHz in a SelectaDock III with 64MB Voodoo 5 5500 and Sound Blaster Audigy 5.1.

Jefferson
Freshman Member
Posts: 76
Joined: Fri Dec 03, 2010 6:05 pm
Location: Denver, CO

Re: Is 600x 650mhz a unicorn?

#11 Post by Jefferson » Sat Sep 07, 2019 2:19 am

pkiff wrote:
Wed Apr 17, 2019 5:50 pm


But frankly, much as I enjoyed having the 850MHz chips in my machines, I found it was actually very rare that I noticed any difference at all between standard PIII 650MHz performance and PIII 850MHz performance. The difference between PIII 850MHz and PIII 800 was definitely undetectable in regular use. One reason I thought I wanted the extra CPU power was to improve gaming more than number crunching or AutoCAD or video/data processing, and what I eventually realized was that I would get a much more significant boost by putting the machine into one of those SelectaDock III docking stations with a Voodoo 5 PCI graphics card than I would get by upgrading the CPU by a wee bit.


Phil.

Absolutely enjoyed your post back then and now :)

I've been away for a few months but am back and want to toy with my old TPs again.

As you mentioned, I want to get the Selectadock and employee external graphic card such as Voodoo 3 or 5.

There seem to be three different versions of the Selectadocks, I, II, and III. Actually I remember trying to find one of

those last year but was unable to find version III. The version II seems to be a bit more easy to find.

Is there a difference between Version II and III? Will both have no problem in dealing with external PCI video cards such as Voodoo 3 or 5?

I'm aware of that you need another dock to place it on top of the Selectadock, which I've managed to get but not yet tested cuz I don't

have the Selectadock yet.

thanks!
:banana:
With the original box and documentation : 600, 380XD, 385XD, X24, X30(10th Anniv), T42p, T43, R52, W700ds
Without : 385XD, 600X, 770X, W701, T420, T430, T520, X230
Not working & for parts : At least a dozen
Other laptops : Dell, Alienware, Lenovo
:banana:

pkiff
Moderator
Moderator
Posts: 1541
Joined: Wed May 05, 2004 9:17 am
Location: Toronto, Canada

Re: Is 600x 650mhz a unicorn?

#12 Post by pkiff » Sat Sep 07, 2019 9:22 am

Jefferson wrote:
Sat Sep 07, 2019 2:19 am
There seem to be three different versions of the Selectadocks, I, II, and III....Is there a difference between Version II and III? Will both have no problem in dealing with external PCI video cards such as Voodoo 3 or 5?
I only ever owned a SelectaDock III, and I don't really know about the differences between the different models. But I doubt that any differences will affect the compatibility of the dock with a PCI Voodoo 3 or 5. The Voodoo cards were very popular and very well supported under Windows 98, and I'm sure the SelectaDocks were tested with various Voodoo cards available at the time. By the time Windows XP came out, these docks were all on their way out I think, and the use of the PCI interface itself for video cards was being replaced by AGP, which promised considerably greater video throughput.
X1 Carbon Tablet (3rd Gen) · P52 · W520 · Legacy: T60p, X61T, 600X, 770Z
Nostalgic for: 600X PIII 850MHz in a SelectaDock III with 64MB Voodoo 5 5500 and Sound Blaster Audigy 5.1.

Jefferson
Freshman Member
Posts: 76
Joined: Fri Dec 03, 2010 6:05 pm
Location: Denver, CO

Re: Is 600x 650mhz a unicorn?

#13 Post by Jefferson » Mon Sep 09, 2019 10:01 am

pkiff wrote:
Sat Sep 07, 2019 9:22 am
Jefferson wrote:
Sat Sep 07, 2019 2:19 am
There seem to be three different versions of the Selectadocks, I, II, and III....Is there a difference between Version II and III? Will both have no problem in dealing with external PCI video cards such as Voodoo 3 or 5?
I only ever owned a SelectaDock III, and I don't really know about the differences between the different models. But I doubt that any differences will affect the compatibility of the dock with a PCI Voodoo 3 or 5. The Voodoo cards were very popular and very well supported under Windows 98, and I'm sure the SelectaDocks were tested with various Voodoo cards available at the time. By the time Windows XP came out, these docks were all on their way out I think, and the use of the PCI interface itself for video cards was being replaced by AGP, which promised considerably greater video throughput.
Thank you so much for your comment! I also stumbled across your old posting on Selectadock III and various compatible Video cards. Very helpful!
:banana:
With the original box and documentation : 600, 380XD, 385XD, X24, X30(10th Anniv), T42p, T43, R52, W700ds
Without : 385XD, 600X, 770X, W701, T420, T430, T520, X230
Not working & for parts : At least a dozen
Other laptops : Dell, Alienware, Lenovo
:banana:

tfflivemb2
Moderator Emeritus
Moderator Emeritus
Posts: 5596
Joined: Thu Sep 01, 2005 1:17 pm
Location: Wisconsin
Contact:

Re: Is 600x 650mhz a unicorn?

#14 Post by tfflivemb2 » Tue Sep 10, 2019 11:52 am

Did you ever find a 600X with a PIII? I was sorting through my old TPs trying to relist them, and got a tad overwhelmed with trying to remember everything about them. One of the ones that was marked as a 600E-2645-4AU (on the bottom and bezel), I booted up and the BIOS shows a 2645-4EU with a PIII 800MHz with Speed Step.

Jefferson
Freshman Member
Posts: 76
Joined: Fri Dec 03, 2010 6:05 pm
Location: Denver, CO

Re: Is 600x 650mhz a unicorn?

#15 Post by Jefferson » Tue Sep 10, 2019 4:08 pm

tfflivemb2 wrote:
Tue Sep 10, 2019 11:52 am
Did you ever find a 600X with a PIII? I was sorting through my old TPs trying to relist them, and got a tad overwhelmed with trying to remember everything about them. One of the ones that was marked as a 600E-2645-4AU (on the bottom and bezel), I booted up and the BIOS shows a 2645-4EU with a PIII 800MHz with Speed Step.
Well, I've always had 600X with 500Mhz and wanted to get another one with 650Mhz for the Speedstep. But never got around to get one.
Right now, I'm not really looking for one as I'm more interested in setting up my 600x with Selectadock III.

Thanks for the interest. you must've had a board swap on your 600E with CPU upgrade. Very impressive! :)
:banana:
With the original box and documentation : 600, 380XD, 385XD, X24, X30(10th Anniv), T42p, T43, R52, W700ds
Without : 385XD, 600X, 770X, W701, T420, T430, T520, X230
Not working & for parts : At least a dozen
Other laptops : Dell, Alienware, Lenovo
:banana:

Christian Thomas
Posts: 2
Joined: Thu Mar 12, 2020 8:37 pm
Location: LONDON, England

Re: Is 600x 650mhz a unicorn?

#16 Post by Christian Thomas » Fri Mar 13, 2020 12:47 am

How do you tell from the Type No. which is a 650MHz 600x and which is a plain 500MHz? I saw that 4EU is apparently a 650MHz. Mine says 8EU on the bottom - don't have access to the BIOS right now as HDD is out. Does that leave it as a vanilla 500MHz?

pkiff
Moderator
Moderator
Posts: 1541
Joined: Wed May 05, 2004 9:17 am
Location: Toronto, Canada

Re: Is 600x 650mhz a unicorn?

#17 Post by pkiff » Sat Mar 14, 2020 4:18 pm

Way back in the dark ages, someone wrote a post that attempted to create a list of which 600X type-models supported SpeedStep, and in doing so, they also created a (partial!) list that identified which models shipped originally with a PIII 650MHz and which ones shipped originally with a PIII 500MHz:
viewtopic.php?p=283544#p283544

The model 2645-4EU shipped originally with a PIII 500MHz, so if someone's 4EU came with a PIII 800MHz or whatever, then that was definitely added later. No 600X shipped with anything faster than PIII 650MHz. And of course, just as someone might have upgrade a PIII 500MHz to a PIII 650MHz or (rarely!! a PIII 800MHz), someone might equally well have downgraded a PIII 650MHz CPU that shipped originally with a machine down to a PIII 500MHz. The type-model number that appears on the machine wouldn't change.

Traditionally, the most reliable source for this information were the various "TBooks" available for the different models. But nowadays, I'm not sure the of the most reliable source.

Looking at the Tbook that I have on-hand, it appears that the 2645-4EU and 2645-8EU models were almost identical. They BOTH shipped with a PIII 500Mhz originally. The only difference is that the 4EU shipped with Win 98 whereas the 8EU shipped with Win 2000.

Phil.
X1 Carbon Tablet (3rd Gen) · P52 · W520 · Legacy: T60p, X61T, 600X, 770Z
Nostalgic for: 600X PIII 850MHz in a SelectaDock III with 64MB Voodoo 5 5500 and Sound Blaster Audigy 5.1.

600X
Senior Member
Senior Member
Posts: 754
Joined: Tue May 21, 2013 3:31 am
Location: Raleigh, NC

Re: Is 600x 650mhz a unicorn?

#18 Post by 600X » Sun Mar 15, 2020 12:33 am

I used to have a 600X with the 850MHz CPU but I traded it in for a 600X with Core i3 motherboard from Dell (built by el-sahef). Some days I regret the trade, but other days I'm happy that I have a 600X that is actually usable. My first ever ThinkPad was a 600X and to this day it is probably still my favorite machine. It holds a special place in my heart.
Last edited by 600X on Mon Mar 16, 2020 5:39 am, edited 1 time in total.
Daily: Custom Mini-ITX (Ryzen 3)
ThinkPads: 600X (i3), A31p (FlexView), T43, T60 (FlexView), T61p (4:3), R61 (QXGA), X301 (AFFS), X200s (LED PVA), W500, X1

axur-delmeria
Senior ThinkPadder
Senior ThinkPadder
Posts: 2740
Joined: Mon May 28, 2012 5:49 am
Location: Metro Manila, Philippines

Re: Is 600x 650mhz a unicorn?

#19 Post by axur-delmeria » Sun Mar 15, 2020 1:59 am

600X wrote:
Sun Mar 15, 2020 12:33 am
I used to have a 600X with the 850MHz CPU but I traded it in for a 600X with Core i3 motherboard from Dell (built by el-sahef). Some days I regret the trade, but other days I'm happy that I have a 600X that is actually usable. My first ever ThinkPad was a 600X and to this day it is probably still my favorite machine. it holds a special place in my heart.
That's a wonderful machine TBH. That's the farthest anyone has gotten into retrofitting a Thinkpad without fabricating an entirely new system board. :D

I'm inclined to call it 600Z, in keeping with IBM's old naming convention for updated variants of any particular Thinkpad model (e.g. 770 -> 770E -> 770X -> 770Z). 8)
Daily driver: X220 4291-C91 i7-2620M

Backup: X601 Core 2 Duo T8100
Toy: X60F Core Solo U1300
On loan: X220 4291-P79 i5-2520M
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

kfzhu1229
ThinkPadder
ThinkPadder
Posts: 1842
Joined: Tue Sep 22, 2015 10:59 pm
Location: Toronto, Canada

Re: Is 600x 650mhz a unicorn?

#20 Post by kfzhu1229 » Sun Mar 15, 2020 2:23 pm

Well I guess should anyone wanted to upgrade the CPU or mod the mobo on these things, I might be able to have a 750Mhz chip coming up. Currently it has a dead ADP3420 chip with shorted 3.3V (again, the cousin of the ADP3421 chip that plagued T2x blink of death) that I needed to replace and the part is still yet to arrive.
viewtopic.php?f=11&t=130095
Dell Lat CP MMX-233 64mb 40gb W2k
600 PII-266 416mb 40gb WXP
T23 PIII 1.13ghz 1gb W7
Precision M4300 X9000 8gb 160gb WUXGA Ultrasharp fp W10
T530i 15.6" i7 16gb fp W10
UXGA:
A30p PIII 1.2 1gb W7 (IDTech)
T43p 2.26 2gb fp W10 (Sharp)
Lat C840 P4-2.5 2gb 60gb W7 (Ultrasharp)

goldeneagle
Sophomore Member
Posts: 148
Joined: Sat May 31, 2014 8:06 pm
Location: Bandera, TX

Re: Is 600x 650mhz a unicorn?

#21 Post by goldeneagle » Tue Apr 14, 2020 3:22 pm

I own two 650MHz PIII 600Xs, though I've been meaning to refurb and sell some 500MHz 600X systems.

The speed allows me to use Windows XP to use more "modern" software on them.
Historic ThinkPads owned:
300 (x3), more 355's than I know what to do with, 360C/CSE/CE/P, 510CS, 560/E, 600E, 701C/CS, 730TE, 750/C, 755C(x3)/CE(x3)/CX/CDV/CD, 760ED, 770
Newer ThinkPads owned:
T520, W520 (x2), X220 Tablet (x4), and some T61/X61T laying around somewhere

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad Legacy Hardware”

Who is online

Users browsing this forum: No registered users and 15 guests