September 28th 2010 03:46 am
How to unlock core with a AMD Phenom II Athlon II X2/X3 processor
If you were not lucky enough and you got a bluescreen of death or some kind. You have to go back to the BIOS settings and pump in more vcore voltage to your processor. Do this in step by step vcore adjustment, as you don’t want to add more than sufficient vcore. Adding more vcore voltage means more heat and it is bad for the CPU.
Adjust the Vcore unlocking core from Phenom II
As you see from the picture above, I am a little bit adventurous. I overclocked while unlocking the 3rd core from my Phenom II X2 500BE. I upped my vcore to 1.40V from the default vcore of 1.30V as seen on the yellow font beside the CPU over voltage, this is to sustain the 400MHz speed bump I imposed on my Phenom II X2(X3 now) with the default clock of 3.1GHz. You can up the voltage by small increment, with each increment by booting into Windows and run Prime95. If it fails again, reboot and do this till you get a stable vcore. However, don’t follow the way I play around the settings here, this picture is to show you how to tweak the voltage of your CPU and please leave all the rest of the settings as default. Well, you can adjust the GPU engine clock too, which is proved to be 100% stable at 1000MHz 
provided you have any compatible motherboard with 785G chipset.
If you were able Kamagra jelly to unlock 3rd, next you can try to unlock the 4th core. Just follow the steps I explain earlier but change the option at the ACC in BIOS.
Unlocked Phenom II CPUZ and temperature readings
The last step is to check the temperature of your new unlocked Phenom/Athlon II. As you can see from my CPUZ readings, it doesn’t recognized as Phenom II X2 500BE anymore. It shows as Athlon II X3 450. I am not lucky enough to get one Phenom II with the ability to unlock the 4th core, but anyway I’m happy enough with 3 cores. The CPUID Hardware Monitor fails to read the temperature of my CPU as this is due to the unlocked core which some how inhibits the temperature sensor operation. So I have to resort to the motherboard temperature sensor which is located very near just below the processor. It gives you readings which may not be accurate enough but give it +-1-3degrees Celsius difference, you got a rough idea of how hot your processor is running. I’m using PC Probe from Asus which reads the temperature from the motherboard sensor. The same utility(with different name of course) can be found from different manufacturer as well.
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5 Comments »
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marv on 22 Feb 2011 at 2:42 am #
i have dual core AMD ATHLON II 2X220.
ASUS M4A78LT-M LE motherboard with AAC and Core unlocker “one touch button”
reboot system it syas press4 to unlock cores.
did that. system reboot. says 2 cores are unlocked!
i had two to start with but CPU-Z says only two operating. what do ido? open the system try and find the actual core unlocker button or just leave it. please help.
admin on 22 Feb 2011 at 10:24 pm #
I really doubt Ahtlon II X2 220 is a quad core with two disabled core. Athlon II is a manufactured as a dual core silicon. Unless you got the very very early batch of Athlon II where there are some enthusiast reported it was derived from Phenom II’s silicon.
By the way, CPUZ doesnt always show the correct information, as you might have the older version. The best way to see the operating cores is by invoking the Task Manager.
Best budget desktop computer PC configurations/components build, 2011 Q2 | TechMostW@nted on 03 May 2011 at 5:27 am #
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