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

Dec 2, 2018
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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?
 
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!
 
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.