R40 max memory and best WLAN and CPU?

Message

jiopsi · #1 Post by **jiopsi** » Fri Apr 29, 2011 7:22 am

Hi,

system 2723-26G

- Maximum memory?
- Best working WLAN-module?
- Best CPU, 1,7GHz PM Banias?

#2 Post by **RealBlackStuff** » Fri Apr 29, 2011 2:31 pm

http://www-307.ibm.com/pc/support/site. ... MIGR-45916
Max RAM: 2x1GB
Probably best bang4buck WLAN: Intel 2200BG, FRU 39T0077 or 93P3483
Recommended CPU: Intel Pentium M 745, P/N SL7EN, 1.8GHz (Dothan)

jiopsi · #3 Post by **jiopsi** » Fri Apr 29, 2011 2:52 pm

I have read that 1,7GHz Banias would be the fastest CPU for R40 what BIOS accepts?

hunterman223 · #4 Post by **hunterman223** » Fri Apr 29, 2011 4:09 pm

jiopsi wrote:I have read that 1,7GHz Banias would be the fastest CPU for R40 what BIOS accepts?

That's correct.

I had this adapter:
http://www.thinkwiki.org/wiki/IBM_11a/b ... CI_Adapter

It was reliable and supported WPA2, which is a must have. The newer intel cards are better, not sure about the older ones. I would go with the 2200bg as RBS said, unless you can't find it get the atheros Iisted.

#5 Post by **RealBlackStuff** » Fri Apr 29, 2011 8:01 pm

jiopsi wrote:I have read that 1,7GHz Banias would be the fastest CPU for R40 what BIOS accepts?

Crap. Don't you read the link I gave you?
The fastest CPU is a 2.4GHz...

ajkula66 · #6 Post by **ajkula66** » Fri Apr 29, 2011 10:44 pm

I've had great experiences with IBM (atheros-chipped) abg wireless cards in R40. Intel 2200BG will work fine as well, but with "1802 error" which is easy to remove.

That type of board will not go above 1.7 Banias, which might prove to be quite hot, and there's no fan upgrade available for R4x generation.

hunterman223 · #7 Post by **hunterman223** » Sat Apr 30, 2011 5:06 am

RealBlackStuff wrote: Crap. Don't you read the link I gave you?
The fastest CPU is a 2.4GHz...

If it were a Pentium 4 board then yes. You can not install a P4 in a Pentium M board.

Sent from my iPod touch using Tapatalk

jiopsi · #8 Post by **jiopsi** » Sat Apr 30, 2011 8:17 am

Ordered 1,7GHz Banias, and will try to find 2200BG WLAN. Does anyone know what kind of DDR memory this takes? It has now PC2100 DDR266, would it take DDR333 or DDR400? Can it run those lower clocks?

hunterman223 · #9 Post by **hunterman223** » Sat Apr 30, 2011 9:14 am

jiopsi wrote:Ordered 1,7GHz Banias, and will try to find 2200BG WLAN. Does anyone know what kind of DDR memory this takes? It has now PC2100 DDR266, would it take DDR333 or DDR400? Can it run those lower clocks?

Supposedly it is backwards compatible, but not in all cases. Some bios's have issues recognising the faster ram, even though their should be no issue. I recommend just getting the 266, you can get 2GB for about $60 shipped on eBay. Search "2gb Pc 2100 sodimm" or 1GB respectively. May I ask what price you got the CPU for? To me it seems like a lot of money to spend on an 8 year old laptop.

Sent from my iPod touch using Tapatalk

#10 Post by **RealBlackStuff** » Sat Apr 30, 2011 10:19 am

IBM's webpage for R40 says:
Intel Mobile Pentium M at 1.3GHz, 1.4GHz, and 1.5GHz
Intel Mobile Pentium 4 at 1.8, 1.9, 2.0, 2.2 or 2.4GHz

hunterman223 · #11 Post by **hunterman223** » Sat Apr 30, 2011 10:24 am

RealBlackStuff wrote:IBM's webpage for R40 says:
Intel Mobile Pentium M at 1.3GHz, 1.4GHz, and 1.5GHz
Intel Mobile Pentium 4 at 1.8, 1.9, 2.0, 2.2 or 2.4GHz

That's what they were originally offered with, but they support a Pentium M up to 1.7Ghz, no more no less.

And like I said before, there were different motherboards for P4 and PM chips, so it is not possible to mix the 2. Also, PM models support 2GB of memory while the Pentium 4 models only supported 1GB.

Sent from my iPod touch using Tapatalk

jronald · #12 Post by **jronald** » Sat Apr 30, 2011 10:26 am

Like ajk66, I prefer the Atheros cards.
As an experiment I took multiple Atheros and Intel cards in 2 identical T30's, and even went so far as to swap them between the machines. The Atheros always stayed connected better. That's not a strictly scientific term, that's just walking around a single house, with a single WAP.

With that said, to use the Centrino feature, you must use the Intel card.

Ron

jiopsi · #13 Post by **jiopsi** » Sat Apr 30, 2011 3:15 pm

hunterman223 wrote:Supposedly it is backwards compatible, but not in all cases. Some bios's have issues recognising the faster ram, even though their should be no issue. I recommend just getting the 266, you can get 2GB for about $60 shipped on eBay. Search "2gb Pc 2100 sodimm" or 1GB respectively. May I ask what price you got the CPU for? To me it seems like a lot of money to spend on an 8 year old laptop.

Ok, I will try to find DDR266. 1,7GHz Banias did cost about 9€ which is about 13$ shipped from Ebay. So not so much.

Original was 1,3GHz.

EDIT: Also got 2GB (2x1GB) of Kingston DDR333 about 18€ (26$) from Internet. Hope it works. Original was 2x 256MB DDR266.

hunterman223 · #14 Post by **hunterman223** » Sat Apr 30, 2011 3:25 pm

Wow, i take it back. Where are you finding these deals? I was on eBay US.

Sent from my iPod touch using Tapatalk

jiopsi · #15 Post by **jiopsi** » Sat Apr 30, 2011 3:28 pm

hunterman223 wrote:Wow, i take it back. Where are you finding these deals? I was on eBay US.

The Banias was in UK eBay, it was only one. Was not going to replace it, until I suddenly came by the offer. The memory is from a dude in Finlands largest computer community: http://murobbs.plaza.fi/.

ajkula66 · #16 Post by **ajkula66** » Sat Apr 30, 2011 3:58 pm

That machine will work fine with both PC2700 and PC2100, I've used both in the past.

It will always run at PC2100 speeds, though.

hunterman223 wrote:

Also, PM models support 2GB of memory while the Pentium 4 models only supported 1GB.

This is outdated and hence incorrect info. ALL Pentium-based R40 (not R40e) units will accept and use 2GB RAM.

hunterman223 · #17 Post by **hunterman223** » Sat Apr 30, 2011 4:18 pm

Pentium 4, Celeron models
Supports up to two 512MB SDRAM SO DIMMs
Supports maximum memory up to 1.0GB

If someone proved the IBM specs sheet wrong I was not aware of it, I apologise.

Sent from my iPod touch using Tapatalk

ajkula66 · #18 Post by **ajkula66** » Sat Apr 30, 2011 7:14 pm

hunterman223 wrote:

If someone proved the IBM specs sheet wrong I was not aware of it, I apologise.

Nothing for you to apologize for. IBM *never* updates the spec sheets after the machine was released...a bunch of us has been running anywhere from 1.25 to 2GB on these machines for years now...trial and error...

hunterman223 · #19 Post by **hunterman223** » Sat Apr 30, 2011 7:21 pm

So it would seem! I guess you have to take "official IBM spec sheets" with a heap of salt.

Sent from my iPod touch using Tapatalk

ajkula66 · #20 Post by **ajkula66** » Sat Apr 30, 2011 7:47 pm

I guess that they (IBM) were just being cautious regarding any liability for users installing stuff that wasn't factory-tested at the time...but this forum is chuck full of people running A31/p, R40 and T30 units with 2GB RAM, large hard drives and faster CPUs than originally prescribed...

...and that's just the beginning...

Intergalactic Captain · #21 Post by **Intergalactic Captain** » Tue Apr 02, 2013 4:31 pm

Don't wanna start a new thread since my question's half-answered...

New R40, first one I've ever owned, model 2681-cto... CPUID says it has a i845d chipset and a northwood-core celeron 2.0ghz. So, I take it I've got one of the P4 systems.

...Spent all morning trying to get it to accept a 1.5 banias to no avail - A lot of what I'd found online said that it should be possible, but a bit more digging says this board is stuck with P4-core celerons and no pentium-M's.

Am I correct in this? I really just want a PM in it for now so it'll run cooler, but I guess I'm stuck with P4's... This is only going to be a beater laptop til the new t43 is finished, then I plan on putting it back up on ebay, so I'm not planning on going overboard with experimentation.

ajkula66 · #22 Post by **ajkula66** » Tue Apr 02, 2013 5:35 pm

R40 had two separate types of boards, one for P4M and the other for PM so you're stuck with P4M if your machine had a Celeron...