Oc i7-3820 on sabertooth x79 is voltage ok?

[onehans1982]

hi guys as i title im wondering if i haven't go too far with voltage? can someone help me please?

 

[DarkOutlaw]

I have no experience with your particular chip, but generally with overclocking your voltage is limited to mostly the amount of heat it produces. If your temps are fine you should be OK. You may want to look up the max specs on your CPU though. I believe the 2500k max safe voltage is 1.5v. At 1.39 you should be good as long as temps are not that high.

 

[onehans1982]

ill check it now, thanks

 

[Pinhedd]

1.4 volts is the absolute maximum VCore for Sandybridge / Sandybridge-E chips. Even at this voltage your processor's lifespan will be somewhat degraded

 

[onehans1982]

i found this Intel spec for this CPU is 1.4v Core, 1.4 VTT, 1.4 VCCSA, 2.1PLL and 1.85 DDR

 

[onehans1982]

well lifespan in this days... thats my third rig in last 4 years. so i guess i will have to buy new in about two years from now i guess it will hold till then =)

 

[onehans1982]

i test it with prime now for 30 min

 

[onehans1982]

i have set it to auto and now is at 1.38v

 

[Pinhedd]

What are your VCCSA/CPUVTT/CPUPLL voltages?

 

[onehans1982]

i set them to auto but it looks like is too much as vcore gets heat up to 77c and it crashes in prime :/

 

[Pinhedd]

The Asus X79 boards push those voltages too high on auto, at least my RIVE does. They may be as high as 1.4/1.4/2.1 respectively which is far too high and can actually cause instability and will severely degrade the IMC/MCH. Set them manually to 1.2/1.2/2.0 and see if that improves stability

 

[onehans1982]

thx

 

[onehans1982]

so i had look at my at voltages vccsa was 1.015 /cpuvtt 1.066 / cpupll 1.8 and i have set them to 1.2/1.2/2.0 prime crashed at beginning :/
then i got them back to auto and just now noticed software warning that vcore gone up to 2.004v!
so i went back to bios and switched of offset ill have a go with prime again

 

[onehans1982]

i have found stable 4625MHz at 125blk and 37 multip so far good

 

[Pinhedd]

2.004 volts on the VCore? I don't even think that the VRM can go that high

 

[onehans1982]

i got this AI Suite II instaled and this is what i found in one of the files:

[08/16/2012 at 02:13 pm] +12V 0.768 Abnormal
[08/16/2012 at 02:13 pm] +12V 12.288 Normal
[08/16/2012 at 08:59 pm] +3.3V 4.080 Abnormal
[08/16/2012 at 08:59 pm] +3.3V 3.344 Normal
[08/16/2012 at 11:38 pm] Vcore 2.044 Abnormal
[08/16/2012 at 11:38 pm] Vcore 1.382 Normal

 

[onehans1982]

i gues that suite is not fully reliable. new socket new motherboard new software :?
as i use my OCZ 700w for last year without problem

 

[onehans1982]

if 12v would drop to 0.768 i think that computer should hang. all that might be due to unstable 4800mhz :?