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lock others/overclock single core in a quad core

post #1 of 8
Thread Starter 
i wanted to know if there is any way to lock cores in a quad core. i have a phenom II x4 925. i was trying hard to get sub 15 scores in superpi but i have trouble maintaining stability at 3800ghz even at 1.55v vcore and 1.3v vddnb volts. so i wanted to know if i can lock down the other three cores or else overclock a single core?

it has been seen that several x6's have locked down 2 cores
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post #2 of 8
This may work for you http://phenommsrtweake.sourceforge.net/

Gyro
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post #3 of 8
Thread Starter 
i tried the tweaker but it only allows configuring p0 state voltages not which cores to lock down.
amd overdrive doesnt work as i have a nvidia chipset. namely the 630a/7025 geforce. mobo is m4n68t-m
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post #4 of 8
Some motherboards have the option to enable/disable cores. I know my Gigabyte does under the "ACC functions" (though the function is not ACC-related).
post #5 of 8
Quote:
Originally Posted by mrcool63 View Post
i tried the tweaker but it only allows configuring p0 state voltages not which cores to lock down.
amd overdrive doesnt work as i have a nvidia chipset. namely the 630a/7025 geforce. mobo is m4n68t-m
You can set each core multi also.You can't shut down cores but you can underclock them separately to as low as 4x200=800mhz.
You may be able to find which core is unstable by reducing the multi of one core at a time and raising others and testing.

Are you using just the cpu multi to oc or are you using refclock also?

As you have an Nvidia chipset the Nvidia performance tools will do the same as Phenommsrtweaker.http://www.nvidia.com/object/nvidia_...ools_6.06.html


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post #6 of 8
Quote:
Originally Posted by Gyro View Post
You can't shut down cores
Wrong.

Search MSconfig --> Boot tab --> Advanced options --> Tick number of processors and change it to whatever you like --> Apply and restart
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post #7 of 8
Quote:
Originally Posted by Devilmaypoop View Post
Wrong.

Search MSconfig --> Boot tab --> Advanced options --> Tick number of processors and change it to whatever you like --> Apply and restart
I was referring to Phenommsrtweaker and NVtools not being able to disable cores.


Gyro
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4x2gb OCZ ddr2 1066 plats seagate 320gb sata lg supermulti dvd WIN 7 64 
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post #8 of 8
Thread Starter 
majorly using refclock as multi is locked in a phenom x4 925. can get it to boot at 268x14 with 1.5v and 1.27 cpu-nb.
if i use the msconfig option will it only work after booting into windows or directly at bios. i ask this because if the cores are disabled i can oc only one core with lower volts.
AMD oc'd
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AMD oc'd
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seagate 500gb, WD 1tb Windows 7 64-bit LG L1730S Corsair 650TX 
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NZXT Gamma 
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