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M3N78-VM ACC and core unlocking

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July 2, 2010 3:03:28 AM

I want to unlock all 4 cores on my dual core 7750 kuma black edition. I have an ASUS M3N78-VM motherboard. I have bios version 1502. What i need is a bios mod that will enable ACC so I can unlock all 4 cores. Does this exist??

system specs

windows 7 ultimate 64
8 gb OCZ Gold Edition 1066
AMD Athlon 64 X2 7750 Kuma 2.7GHz Black Edition
ASUS M3N78-VM AM2+/AM2 NVIDIA GeForce 8200 HDMI Micro ATX AMD Motherboard
EVGA 896-P3-1257-AR GeForce GTX 260 Core 216 Superclocked Edition 896MB 448-bit GDDR3 PCI Express 2.0 x16
160gb seagate hard drive
Sunbeam PSU-H680-REV-US-BL 680W ATX 12V 2.0 Power Supply
bios version 1502

Any advice or help i can get on this subject would be greatly appreciated.

Thanks,
Jason
July 2, 2010 5:25:22 AM

History lesson:

AMD first introduced it's dual core K8 processors a long time ago. The time you got your CPU, the phenom had been introduced and AMD began selling quad cores with one (unstable) disabled CPU core. Demand go high for the 3-core CPUs, so AMD began disabling quads with the disabled core actually being stable. People realized this and "unlocking" began. A game of chance, where you hoped your disabled CPU core was one of those "perfectly good cores" that had been disabled just to meet demand. During this time, the Athlon 64 K10 models (7750 etc) were native dual core CPUs. This is your model. Your model does not have any disabled core; it is a native dual core processor.
AMD then introduced their Phenom II and Athlon II CPUs. Currently, the phenom IIx2 is a disabled quad as is the phenom IIx3. The Athlon II x3 is a disabled quad also but the Athlon IIx2 is a native dual core. Native meaning that it was manufactured only with said number of CPU cores.

Basically what I am saying is that your CPU does not have any cores to unlock.

Based on your system and motherboard, you have a very large range of CPU upgrade options. Useful ones are in the pricerange of $80-180 approx. If you want to purchase a new CPU, feel free to ask us about it.

Edit: Actually, you are in luck! I seem to be mistaken:
http://www.pcgameshardware.com/aid,682644/Athlon-X2-775...
http://www.techpowerup.com/92330/Athlon_X2_7750_BE_Unlo...
http://www.facepunch.com/showthread.php?t=734246
http://forums.vr-zone.com/news-around-the-web/423356-am...

I have not unlocked cores before, but I believe all you need to do is enable ACC in the bios.

I have bios version 1502. What i need is a bios mod that will enable ACC so I can unlock all 4 cores. Does this exist??
I know of no one who has created a bios mod for anything. If you find a site, let me know. But this board should have the ACC option available under "CPU configuration" along with C1E and cool'n'quiet options. Just set it to enabled.

Edit, Edit: Just noticed you have an Nvidia Northbridge. I believe you can still do it. Nvidia has an option that may do this but I do not remember what the option is called. It's basically the same as ACC.
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July 2, 2010 5:39:01 AM

enzo matrix said:
History lesson:

AMD first introduced it's dual core K8 processors a long time ago. The time you got your CPU, the phenom had been introduced and AMD began selling quad cores with one (unstable) disabled CPU core. Demand go high for the 3-core CPUs, so AMD began disabling quads with the disabled core actually being stable. People realized this and "unlocking" began. A game of chance, where you hoped your disabled CPU core was one of those "perfectly good cores" that had been disabled just to meet demand. During this time, the Athlon 64 K10 models (7750 etc) were native dual core CPUs. This is your model. Your model does not have any disabled core; it is a native dual core processor.
AMD then introduced their Phenom II and Athlon II CPUs. Currently, the phenom IIx2 is a disabled quad as is the phenom IIx3. The Athlon II x3 is a disabled quad also but the Athlon IIx2 is a native dual core. Native meaning that it was manufactured only with said number of CPU cores.

Basically what I am saying is that your CPU does not have any cores to unlock.

Based on your system and motherboard, you have a very large range of CPU upgrade options. Useful ones are in the pricerange of $80-180 approx. If you want to purchase a new CPU, feel free to ask us about it.

Edit: Actually, you are in luck! I seem to be mistaken:
http://www.pcgameshardware.com/aid,682644/Athlon-X2-775...
http://www.techpowerup.com/92330/Athlon_X2_7750_BE_Unlo...
http://www.facepunch.com/showthread.php?t=734246
http://forums.vr-zone.com/news-around-the-web/423356-am...

I have not unlocked cores before, but I believe all you need to do is enable ACC in the bios.

I have bios version 1502. What i need is a bios mod that will enable ACC so I can unlock all 4 cores. Does this exist??
I know of no one who has created a bios mod for anything. If you find a site, let me know. But this board should have the ACC option available under "CPU configuration" along with C1E and cool'n'quiet options. Just set it to enabled.

Edit, Edit: Just noticed you have an Nvidia Northbridge. I believe you can still do it. Nvidia has an option that may do this but I do not remember what the option is called. It's basically the same as ACC.



You have been very helpful!!! I am looking up info on the Nvidia northbridge option, any more info you can find on this would be very helpful!!! VERY VERY much appreciated!!

Jason
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July 2, 2010 5:42:02 AM

bird391 said:
You have been very helpful!!! I am looking up info on the Nvidia northbridge option, any more info you can find on this would be very helpful!!! VERY VERY much appreciated!!

Jason

I used to own that exact motherboard until the nvidia chipset died. Well, started to die. I'll see if I can dig out the motherboard manual tomorrow.
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July 2, 2010 5:49:07 AM

enzo matrix said:
I used to own that exact motherboard until the nvidia chipset died. Well, started to die. I'll see if I can dig out the motherboard manual tomorrow.



Thank you very much!
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July 2, 2010 1:33:42 PM

bird391 said:
Thank you very much!

I wasn't able to find anything but I hear something about an "Nvidia Core Calibration". Perhaps it is a feature in an updated bios?
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