Well, I know it’s extremely easy to overclock an AMD Phenom Black Edition CPU. You just up the CPU multiplier and get your processor overclocked. You usually do it in BIOS or with AMD Overdrive under windows. Though AOD is an excellent tool to overclock, I find it very slow when applying settings. But there is an excellent light weight utility to overclock your CPU under windows – Phenommsrtweaker. Though I don’t like the name of the tool, I just like the functionalities it provides.
The Phenom overclock tool is light weight, fast and can be used to automatically set your Phenom CPU to overclock when needed. It’s a great tool and I just love it. But the disadvantage is that you can only use the tool with a Black Edition Phenom CPU to overclock. But I don’t think that’s an issue as many of us are already having a BE Phenom II CPU. (Update: It’s also possible to overclock a non BE CPU if the HTT and other things are set under BIOS. Thus, one can manipulate the multiplier under windows with this tool to automatically overclock any Phenom-family processor.)
Overclocking Your Phenom CPU with Software
Overclocking your Phenom II BE CPU is extremely easy under windows. I’m going to explain how to do that here. Before that, you need the following tools.
To start off, disable C&Q from Bios as leaving it enabled causes instability.
Open Phenommsrtweaker, CPUz and HWMonitor and keep all windows visible all the time.
1. In Phenommsrtweaker next to “Core multis” you will see four boxes where you have the option to adjust the CPU multiplier. Increase the multiplier up one in all the four boxes (for me the default is 15, so I increase it to 16). And select Apply.
2. Check in CPUz if the CPU is overclocked. You can see it next to “Core Speed”.
3. You have to check your overclock for stability. Open Prime95, select Small FFTs and select OK. This will stress your CPU to the max. Run the test for a couple of hours. If the overclock is stable, your system should not crash or throw up BSOD.
4. If you find your overclock stable follow Step 1 again to increase the multiplier but this time up 0.5. Check if the overclock took effect in CPUz and do the same stress test again.
5. Continue doing the same until your system is unstable. Now you have found the max overclock your CPU gets to at stock voltage.
6. Now you have to see if you can get more overclocks with increased CPU vcore. In Phenommsrtweaker select the multiplier at which the CPU was NOT stable. In the box next to “CPU VID” you can adjust the CPU vcore. Increase it one notch and select apply. If the CPU vcore doesn’t change, increase it again and apply to see if it changes. If it changes, well and good (it has to change in the next one or two increments) , you can continue to step 7. If vcore doesn’t change try increasing “NB VID”. In some motherboards changing the “NB VID” affects CPU voltage.
7. Stress test using Prime95 to confirm stability. If the system crashes during the test, increase the vcore up one notch or until the system properly runs Prime95.
8. To find out if your CPU can overclock more, follow step 6 until your CPU no more responds to increased vcore. This is the max overclock you can get.
Note: Always stress test your CPU for at least 2 hours to make sure the CPU is stable.
Overclockers overclock the CPU to improve the system performance. They often do it at the cost of power consumption and increased heat. As overclockers have to turn off Cool & Quiet for stability, they have to run the CPU at the max OC resulting in increased power usage even when the system sits idle.
This had been bugging me for a long time until I realized Phenommsrtweaker could be used to automatically manipulate the P-states of Phenom processors if and when needed.
For most of us, power consumption may not be an issue. But what if you can automatically overclock your Phenom II CPU when needed without compromising on stability and power consumption?
I have explained in my previous post how to use Phenommsrtweaker to automatically overclock your CPU when the demand arises. I’m using it for quite a some time and it works perfect. I would also like to recommend that to others who want to overclock but don’t want their systems to consume more power when idle. Finally, this is not an extensive AMD Phenom II overclocking guide, but will give an idea how to OC a Phenom CPU under windows. UDABC4YQNPWH
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