Voltage for amd phenom 2 x4 965 BE at 3.8 ghz
- Thread starter SARGE3019
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bad_eyes83
Distinguished
- Jan 13, 2011
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my 955 is running 1.44vcore at 4.0ghz with and ASUS Crosshair V Formula, I can't see yours beeing higher than mine... slowly increase the voltage and multiplier and look at your temps by stressing the cpu for 10 minutes minimum
ingtar33
Glorious
- Dec 17, 2012
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i got that chip, overclocked to 3.8, i have the vcore at 1.4375
that said generally speaking every cpu is different. Some can do it at stock voltage. some can even do it at lower voltages then stock, others can't even stabilize at 3.8. Generally speaking the PhII x4 965be is at it's most "ideal" speeds when it's at 3.8ghz. as performance gains are pretty minuscule past that point.
ingtar33
Glorious
- Dec 17, 2012
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I think you should overclock like you're supposed to and not just jump to a speed and hope.
Overclocking these chips is pretty simple. Hop into the bios, change the vcore from auto to 1.3875V (which i believe is stock for the 965be), then bump the multiplier up from 17 to 17.5. that will bring you up to 3.5ghz. Save and see if you load into windows. If you do, restart your pc and push the multiplier up to 18, which will bring you up to 3.6ghz. Save and load into windows. assuming you do, repeate till you can't load into windows. Bump your vcore one step (to 1.4000V) and see if that lets you load into windows. if it doesn't bump it another step up (1.4125V), and try again. Once you're able to load into windows, start to move your multiplier up again, bumping vcore whenever you fail to load into windows, until you get your cpu up to x19 multiplier (3.8ghz).
make sure you're able to load into windows. Then dl and run prime95, i like the blend test because it will expose an unstable machine pretty quickly and really pushes the temps high. keep a close eye on your cpu temps with something like coretemp. If prime crashes back to desktop, or your system simply does a black screen restart and temps never rose above 55C you probably are undervolting your cpu. Go back into the bios and raise the vcore another step, and try again. keep increasing vcore by 1 step until you're able to run prime95 for a few hours. Now you might get to the point raising vcore doesn't stop the crashes but now you're crashing into a blue screen. 8 times out of 10, a blue screen crash is related to system ram or your northbridge. If you're blue screen crashing come back into here and we can probably give you some tips on how to troubleshoot it.
Let us know how it goes. If you're nice and stable in prime95, and your cpu temps aren't breaking 55C-60C after a few hours i'd say you have a good cpu overclock. It will then be time to tinker with your ram and northbridge to get the most out of your machine.
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