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Oc i7-3820 on sabertooth x79 is voltage ok?

  • CPUs
  • Sabertooth
  • Intel i7
  • Overclocking
Last response: in Overclocking
August 16, 2012 1:09:33 PM

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

More about : 3820 sabertooth x79 voltage

August 16, 2012 3:16:19 PM

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.
August 16, 2012 7:46:00 PM

ill check it now, thanks
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August 16, 2012 7:48:25 PM

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
August 16, 2012 7:50:07 PM

i found this Intel spec for this CPU is 1.4v Core, 1.4 VTT, 1.4 VCCSA, 2.1PLL and 1.85 DDR
August 16, 2012 7:53:46 PM

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 =)
August 16, 2012 7:54:18 PM

i test it with prime now for 30 min
August 16, 2012 7:54:27 PM

i have set it to auto and now is at 1.38v
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August 16, 2012 8:20:33 PM

What are your VCCSA/CPUVTT/CPUPLL voltages?
August 16, 2012 8:45:47 PM

i set them to auto but it looks like is too much as vcore gets heat up to 77c and it crashes in prime :/ 
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August 16, 2012 9:30:35 PM

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
August 16, 2012 10:45:00 PM

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
August 16, 2012 10:54:27 PM

i have found stable 4625MHz at 125blk and 37 multip :)  so far good
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August 16, 2012 11:32:01 PM

2.004 volts on the VCore? I don't even think that the VRM can go that high
August 17, 2012 10:09:20 AM

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
August 17, 2012 10:10:10 AM

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
August 17, 2012 10:12:57 AM

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