CPU upgrade for HM76 Socket 988B rPGA (HP Probook 6570b)

[aurumnus]

I have an HP Probook 6570b.

Socket is 988B rPGA.
My current CPU is i5-3210M.

I read this thread, and it got me thinking if I can also upgrade my Laptop CPU to i7 Quad.
CPU upgrade question Probook 6570b

If I had an QM77 Chipset, like he had, I would have tried it without question.
But I have an HM76 Chipset.

And i don't know what differences these two Chipsets have.


So, can I upgrade to an i7 Quad, like an i7-3840QM?

 

[helpstar]

Technically it´s no big difference to the QM77 chipset:
https://www.anandtech.com/show/5192/ivy-bridge-mobile-lineup-overview

Official spare part list doesn´t list the 3840QM, but should work nontheless
https://support.hp.com/gb-en/document/c03639940#AbT1

Eventually update the system BIOS

 

[aurumnus]

I have to update the BIOS before or after the CPU upgrade?

 

[helpstar]

Which BIOS version is currently installed? The latest from HP is F.73 Rev.A

I would try upgrading the CPU with your current BIOS version. If it doesn´t work, update it with your I3 and try again with the new CPU.
https://support.hp.com/th-en/drivers/selfservice/hp-probook-6570b-notebook-pc/5212927

 

[aurumnus]

BIOS is 68ICE Ver. F.32.

 

[blagomils]

I have exactly same HP Probook 6570b with HM76 Chipset.
I just upgraded CPU to i7 3720qm and it started without problems and doesn't heat up too much either - only around 90-92 degrees Celsius under full stress.
All 4 cores and 8 threads are recognised.
I didn't even update BIOS, its F.62 version from 2015.

Works just fine!

 

[helpstar]

The i7 3720QM was not in question, because it´s on the official HP spare parts list other than the i7-3840QM 😉

Maybe aurumnus got the 3840QM to work nontheless.

 

[blagomils]

Actually, its on the official list as only working with EliteBook 8570p and not with probook in question. So it's still 4 core cpu within probook that officilly should not support it.
And there is very little difference between 3720qm and 3840qm.

 

[helpstar]

Ah, didnt´see that.
The difference is the microcode in the BIOS, the chipsets in question would all support it, if the CPU microcode is programmed into the BIOS.