Phenom II 965 stock voltage problem

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Vasil Kamburov

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Apr 11, 2013
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Hello i have a problem with my phenom 965 when i set it to stock my mobo sets to 1,475 volts my vcore and i have no problem with cpu stability then i can run prime test for hours without problem but as i try to lower down the vcore voltage lets say 1,41 for stock frequency 3,4ghz and everything else on auto in bios and i try to run a stress test Blend i get windows halt after few minutes .I can run prime95 small FFT`s test for hours but when i try other types of tests i get stuck .The interesting thing here is that my ram looks stable as i run a memtest86 for couple of hourse without error as i run my ram at stock too (amd 1600mhz 8-9-8-24-32-1T 1,65v all stock sets as it comes from amd) so i don`t really get it is just my cpu fucked up and need high vcore voltage to run or i am doing something wrong ?
And i get goot cpu temps like 34 idle/ 46C max when loaded for hours/
My mobo temp looks a litle high though 44 when full loaded

PC:
cpu 965be
mobo ASUS m4a87td-evo
psu fortrone blue storm II 500w
gpu palit 460gtx 1gb sonic platinum
ram amd performance edition 1600mhz 8-9-8-24 1,65v
Cpu cooler CM h212 evo
 
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ingtar33

ingtar33

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Dec 17, 2012
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i got a similar mb (ASUS m4a78t-e)... and same cpu. and similar ram (ddr3 1600)...

i'll tell you with my ram set to 1600, my system was never stable at stock voltages... i've read that's a problem with the 965be. it sorta hickups on ram at those speeds.

I actually had to boost the cpu-nb and ram voltages to make it run stable with that type of ram. my overclock runs really high ram voltages and cpu-nb as a result of this.

if you back that ram down to 1333, i'd be willing to bet your system will be rock solid at stock voltages. Sidenote, your ram is basically factory overclocked (its not natively 1600), so backing it off might even allow you to lower the ram voltage and maintain stability.

If you wish to keep your ram at 1600, you'll need to look into boosting the voltage to the ram and maybe even the cpu-nb...
 
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Vasil Kamburov

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Apr 11, 2013
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Finally i got it 1.375 V vcore and 1,2V cpu/nb finally i guess my mobo underclocked my cpu/nb it was at 1.1v i guess it was not enough now i am going to try to optimise my volts so i can reach lower temps cureent core temp 48 C after 2 hours prime95 finally something good :)
 
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ingtar33

ingtar33

Glorious
Dec 17, 2012
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glad i could help.
 
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Vasil Kamburov

Honorable
Apr 11, 2013
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thank you very much just want to ask how much cpu/nb voltage is normal ?

 
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ingtar33

ingtar33

Glorious
Dec 17, 2012
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45,840


loaded question there. mine is currently sitting at 1.4V which is near the upper limit for it. But that's because i changed the CPU Frequency quite a bit in my overclock, as well as altered my cpu-nb and ht settings.

i wouldn't be too concerned with "others" settings... and work on what makes your system most stable. that might take some experimentation, as every system is a different collection of parts from the RAM to the CPU to the MB to the PSU. all of which will play a roll in what will be the ideal voltage to set your parts to.

experiement, if your system is working right, at good temps, and won't crash no matter what you do to it, then you've got it right for your system. :D

Good luck!
 
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