Thinkpads Forum

Posted: **Mon Apr 28, 2008 9:15 pm**

Just pulled from my T41p. Asking for $22 Shipped. Payment Via Paypal.

1.5GHz Banias
1MB L2 Cache
400MHz Front Side Bus

Thanks

Sold to Brandon

Posted: **Tue Apr 29, 2008 8:18 am**

Now $20 Shipped.

Posted: **Wed Apr 30, 2008 1:26 am**

Will this work in a Thinkpad R52 1858CTO?
Thanks
brandon

Posted: **Wed Apr 30, 2008 1:57 pm**

90base wrote:Will this work in a Thinkpad R52 1858CTO?
Thanks
brandon

Don't think so - your laptop runs on a 533MHz (4x133) FSB and not at 400Mhz (4x100) FSB like the Banias core cpu.

Posted: **Wed Apr 30, 2008 6:40 pm**

djpharoah wrote:
90base wrote:Will this work in a Thinkpad R52 1858CTO?
Don't think so - your laptop runs on a 533MHz (4x133) FSB and not at 400Mhz (4x100) FSB like the Banias core cpu.

According to the thread:

[url=http://forum.thinkpads.com/viewtopic.php?t=54414][color=blue][u]What R52's have the 533FSB ?[/color][/u][/url], in his post of Sun Dec 23, 2007 12:42 am, dr_st wrote:All R52 models with a Celeron M have the 910GML chipset @400MHz bus.

All R52 models with a Pentium M have the 915GM/PM chipset @533MHz bus.

and then, according to the thread:

[url=http://forum.thinkpads.com/viewtopic.php?t=32829][color=blue][u]R52 Celeron to Pentium M CPU upgrade is possible![/color][/u][/url], in his post of Fri Nov 10, 2006 3:42 am, underclocker wrote:I picked up an R52 with Celeron 1.3. The upgrade to a Dothan 725A 1.6GHz CPU was quick and works perfectly. CPU-Z shows the voltage adjustments are correct and SpeedStep is working properly.

Note: The CPU I used was a 400MHz bus Dothan. I do not have a 533MHz bus Dothan to test with at this time, but would like to find out if those are properly set up by the BIOS. When I get one, I will test.

which seems to indicate that this 400 MHz FSB Banias will work in the Celeron-R52.

Johan

Posted: **Wed Apr 30, 2008 7:52 pm**

Wow ^ didnt know that - I figured that as soon as you pop in a Pentium Mobile it would increase the clock to 133.

Posted: **Wed Apr 30, 2008 11:08 pm**

It will work. I remember Kyocera doing it on one of his R52 machines.

Posted: **Thu May 01, 2008 7:07 am**

ajkula66 wrote:It will work. I remember Kyocera doing it on one of his R52 machines.

Good memory in your system (and still running at good speed!), George

- I guess it could be the one mentioned in the thread:

[url=http://forum.thinkpads.com/viewtopic.php?t=49717][color=blue][u]FS:R52 1858-R11 *pic* Price Dropped & SOLD[/color][/u][/url] where, in his post of Tue Sep 18, 2007 7:21 am, Kyocera wrote:Product: ThinkPad R52 1858-R11

Original description: Based on 1858-22U: Celeron M 370 (1.5 GHz) (remaining description snipped)

The above description is from the Lenovo product page, however, I have done some upgrades:

Pentium M 1.6 GHz

Johan

Posted: **Fri May 02, 2008 10:01 am**

Thinkpads Forum

SOLD - Intel Pentium Mobile CPU - 1.5GHz Banias Core

SOLD - Intel Pentium Mobile CPU - 1.5GHz Banias Core