HP Probook 4510S CPU upgrade

[toine0]

Hello,

Following an existing thread, I tried to upgrade the CPU on my Probook 4510s.

So I ordered a Core 2 Duo T9600 and replaced the existing Celeron T3000.

Then when powering on, it powers off after a few seconds.

I put the T3000 back and it works again.

I thought it could be the FSB speed that is different from the PC2-6400 RAM modules, but I saw that Acati replaced a T6570 by a T9400 and said it works: https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/HP-Probook-4510S-Cpu-upgrade/m...

I also upgraded the BIOS.

Any idea?

[Paul_Tikkanen · Accepted solution]

Hi:

It depends on what chipset your notebook has.

If it has the Mobile Intel PM45 Express Chipset or Mobile Intel GM45 Express Chipset, you can run processors with a 1066 MHz FSB.

If it has the Mobile Intel GL40 Express Chipset, it can only run processors with a max FSB of 800 MHz.

Use the free utility that I zipped up and attached below to see what chipset your notebook has.

I would say if the T9600 didn't work in your notebook, then it has the Mobile Intel GL40 chipset.

I think all of the 4510s' that came with the Intel Celeron processors came with the Mobile Intel GL40 Express Chipset.

[toine0]

Hi Paul,

You are right. My chipset is a GL40.

Th good news is that the CPU was not so expensive.

Thank you for your help!

[Paul_Tikkanen]

You're very welcome.

Try the T9500 in there and see if that works, or go with the T6570 listed in that HP Quickspecs link I posted in that other discussion.

Here is a comparison of the two processors.   One of those is probably not very expensive either.

Intel® Product Specification Comparison

[toine0]

Well, the T9500 is too expensive and for the T6570, I don't think a new complete teardown is worth it.

I think it will stay with its bad Celeron.

Thank you anyway.

[Paul_Tikkanen]

Anytime.

Glad to have been of assistance.