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[SOLVED] Sony VAIO VPCCA i7 2860QM Quad Core Support
#1
Update: No BIOS mod was required. It was just msconfig (mis)configuration.

Hi there,

I just bought an Intel i7 2860QM to upgrade my laptop, but I found the BIOS only allows 2 working cores (4 threads). Would it be possible to modify it so I can get the 4 cores and 8 threads?

Here are some details from CPU-Z
[Image: VAIO.png]

And the BIOS  - R0242V2
http://sonyvaiodriver.com/category/sony-...e-drivers/


Thank you in advance.
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#2
Do you know of any similar mod? I guess it should be possible. Any link I could use to see if I could do it myself?

I guess this limitation was imposed by Sony to have power consumption under control (the original i7 2620M had a TDP of 35w and this one is 45W), but since I'm using an external GPU, I guess i have more room.

Thanks.
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#3
Disable CPU Core Parking feature .
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#4
(09-13-2015, 02:34 PM)DeathBringer Wrote: Disable CPU Core Parking feature .

Hey! Thanks a lot for the suggestion. I had never heard about it before. Unfortunately, I did a bit of research, tried unparking them all but I still only see 4 cores in the task manager... But now I have doubts about the actual root of the limitation. Taking a look at the device manager, it shows 8 logic cores
[Image: Device_Manager.jpg]

Could it be something related with the OS instead of the BIOS? I'm running a clean install of Windows 7 Enterpirse x64.
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#5
Try this:
Quote:Open regedit and navigate to

"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\ PowerSettings\54533251-82be-4824-96c1-47b60b740d00"
Then search for "0cc5b647-c1df-4637-891a-dec35c318583"

and set "Attributes" from "1" to "0"
Then open your energy options. You should have a new entry now:

Set the "Processor performance core parking min cores" to 100%
and reboot.
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quote
#6
(09-16-2015, 01:45 AM)DeathBringer Wrote: Try this:
Quote:Open regedit and navigate to

"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\ PowerSettings\54533251-82be-4824-96c1-47b60b740d00"
Then search for "0cc5b647-c1df-4637-891a-dec35c318583"

and set "Attributes" from "1" to "0"
Then open your energy options. You should have a new entry now:

Set the "Processor performance core parking min cores" to 100%
and reboot.

Still no luck  Undecided
I tried http://www.coderbag.com/programming-c/di...ng-utility and https://bitsum.com/parkcontrol/, and both report only 4 cores.

Any other ideas?
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#7
No more ideas. Device manager shows 8 logic cores then it isn't a BIOS's problem. So It's offtopic.
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#8
(09-17-2015, 12:05 AM)Cheve Wrote:
(09-16-2015, 01:45 AM)DeathBringer Wrote: Try this:
Quote:Open regedit and navigate to

"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\ PowerSettings\54533251-82be-4824-96c1-47b60b740d00"
Then search for "0cc5b647-c1df-4637-891a-dec35c318583"

and set "Attributes" from "1" to "0"
Then open your energy options. You should have a new entry now:

Set the "Processor performance core parking min cores" to 100%
and reboot.

Still no luck  Undecided
I tried http://www.coderbag.com/programming-c/di...ng-utility and https://bitsum.com/parkcontrol/, and both report only 4 cores.

Any other ideas?

check msconfig?

also whats the taskmanager showing now?
just to make sure. you have 4 cores. and 8 threads. that's how it should be reported too. you don't have 8 cores.
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quote
#9
(09-17-2015, 05:29 AM)GizmoTheGreen Wrote:
(09-17-2015, 12:05 AM)Cheve Wrote:
(09-16-2015, 01:45 AM)DeathBringer Wrote: Try this:
Quote:Open regedit and navigate to

"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\ PowerSettings\54533251-82be-4824-96c1-47b60b740d00"
Then search for "0cc5b647-c1df-4637-891a-dec35c318583"

and set "Attributes" from "1" to "0"
Then open your energy options. You should have a new entry now:

Set the "Processor performance core parking min cores" to 100%
and reboot.

Still no luck  Undecided
I tried http://www.coderbag.com/programming-c/di...ng-utility and https://bitsum.com/parkcontrol/, and both report only 4 cores.

Any other ideas?

check msconfig?

also whats the taskmanager showing now?
just to make sure. you have 4 cores. and 8 threads. that's how it should be reported too. you don't have 8 cores.

Sure, 4 cores/8 threads. But everywhere I check (task manager, msconfig, CPU-Z, those unparking apps), except for the Device Manager, shows 4 threads (2 cores/4 threads).

I would like to check with my desktop computer what does the device manager show if I limit the number of cores from BIOS, but I'm currently far away from it for the following weeks. Could anyone try that for me, please?

I managed to unpack my BIOS, but need to research what should I look for.
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#10
Cheve, show a screenshot of msconfig under button Advanced options on current OS in Boot tab. E.g.
[Image: MSConfig_Boot_Advanced_Options.gif]
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