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Help needed! prime issue

post #1 of 7
Thread Starter 
the system passes pcmark vantage no problems, but when i run it through prime it seems to either bsod, or restart. cant seem to keep it stable in prime for more then 10 minutes.

Edited by Spoonr - 4/19/11 at 1:56pm
    
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post #2 of 7
Look at this guide mate

http://www.overclock.net/intel-gener...uide-p67a.html

luck !
post #3 of 7
Unstable OC, I would start with prime personally and then use vantage, I've not used it but it doesn't seem very good lol.


And you haven't changed the BUS Speed so that is almost certainly more V-core needed from what I've seen.
    
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post #4 of 7
i m guessin u r n00b dont mind please, its better not to overclock if your system is not stable. BOSD in 10 min of prime - (blend is better) does not mean you have a problem with your chip, its just that its not stable.

actually from the img u pasted nothing much is clear.
if you can leav your ram at default setting or the present setting i am guessing its your default.

mostly you will need to increase your VTT to 1.10V (this is your problem mostly)
and also you can decrease your CPU PLL to 1.76 or 1.78 (above 1.8 is not needed at all)

also check your volatage at load (it will decrease)
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post #5 of 7
Start increasing your VCORE a little at a time. Also, experiment with the LLC settings. If you haven't used them, just bring it up one step and see how it goes. This way your voltage won't drop as much under load. Make sure you check you voltages after each change, though. On my P8P67 Pro I use Medium LLC. This will generate more heat too, so, be careful.

Once you get up to higher speeds you might want to enable PLL Overvoltage (shouldn't be needed at 4.2 GHz).

CPU PLL can be lowered quite a bit as well (mine is only 1.71), which may allow for lower VCORE.

As for testing, Prime95 blend is a very good test for stability. Let it run at least an hour if you want to test if you're reasonably stable. Do an overnight Prime95 blend test if you don't encounter problems to confirm your stability. IBT is good too, but can generate extreme heat.
Edited by Speedboat_LS - 4/20/11 at 3:09pm
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post #6 of 7
Thread Starter 
thanks guys for all your support and suggestions, great community i must say! i just got home from work so will be messing with it tonight. will let you guys know how it goes!

running prime now 4.2ghz stock ram settings at 1.2 vcore. vtt 1.10 right off the bat noticed the temp. are a lot cooler on all cores. will report back with some pics

*edit* been running prime for 10 minutes now, seems stable at 4.4ghz cpu-z shows 1.28 vcore, but i know in bios it was actually raised to about 1.33, i think this is called vdrop or droop? sorry not sure what the correct term is. VTT also had to be raised to 1.16. temps are good. last night i tested one of the mobo (asrock extreme4) auto oc setting at 4.4 and temps were pretty high same with voltage but was very stable under prime for more then an hour. seems like the advantage i get with manual setting is lower amounts of heat, which is a significant trade off...all very new to this still lol
Edited by Spoonr - 4/20/11 at 11:01pm
    
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post #7 of 7
Thread Starter 
prime failed with one error at 14 minutes. how would you now determine the problem? i went back into bios and set these new settings:

v core fixed mode 1.355 volts
cpu pll 1.709 volts
vtt 1.116 volts

everything else on auto
Edited by Spoonr - 4/20/11 at 11:10pm
    
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