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2500k Prime95 Blend Fail

post #1 of 7
Thread Starter 
I was at 4.8ghz with around 1.43v somewhat stable and decided it needs to have lesser volt. I decided to have 1.38v as my max voltage and 4.7 did not cut through and kept giving me bsod. I get around 1.5 hours of stability with small fft on prime95 with 4.6ghz on 1.36 but 3 of the 4 workers fail on blend.

Current settings:

Internal PLL: Enabled
EPU Power saving: disabled
LCC: Ultra high
VRM: 350
Phase and Duty control: Both extreme
Cpu current: 100%

Vcore 1.365 (added 0.005 for blend test, still getting workers fail)
DRAM: 1.5v
CPU PLL: 1.75 (can go down to 1.71)

Do I keep going up with the vcore until blend doesnt fail anymore? Any help with this oc? Thanks!



    
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post #2 of 7
Try 1.37v for the CPU voltage, and bump your VCCIO voltage just a couple notches in the bios. That should stabilize you.
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post #3 of 7
How is that hyper 212 doing at 1.43v?
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post #4 of 7
what error is it giving you on prime blend?
post #5 of 7
Why are you dropping PLL voltage when you havent stabilized the OC yet?

Try to get the Vcore to 1.365v (loaded) it should give you a stable result at 4.5~4.6Ghz.
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by Dopamin3 View Post
Try 1.37v for the CPU voltage, and bump your VCCIO voltage just a couple notches in the bios. That should stabilize you.
I just upped the vcore from 1.365 to 1.37 and tried do blend test. Changed the vccio to 1.2 from auto and worker #3 still fails within 3 minute with a rounding error. I can run 10 times on IBT and LinX without errors fine, but just the problem with blend test.



Quote:
Originally Posted by djsi38t View Post
How is that hyper 212 doing at 1.43v?
It was doing fairly well without going over 80 in temp on load with prime95.



My current settings are

Vcore: 1.37v
Vccio: 1.20v
Pll: 1.75v

Everything else same as top. Blend test seems to fail with rounding errors, and I'm starting to believe that it has to do with other than the vcore. I ran memtest for roughly 16 hours and came up with no errors (2 sticks). Is there something I'm missing here?
    
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post #7 of 7
Quote:
Originally Posted by SovereigN7 View Post
I just upped the vcore from 1.365 to 1.37 and tried do blend test. Changed the vccio to 1.2 from auto and worker #3 still fails within 3 minute with a rounding error. I can run 10 times on IBT and LinX without errors fine, but just the problem with blend test.





It was doing fairly well without going over 80 in temp on load with prime95.



My current settings are

Vcore: 1.37v
Vccio: 1.20v
Pll: 1.75v

Everything else same as top. Blend test seems to fail with rounding errors, and I'm starting to believe that it has to do with other than the vcore. I ran memtest for roughly 16 hours and came up with no errors (2 sticks). Is there something I'm missing here?
if it fails early on the blend test then thats a vcore problem iirc, try 1.38
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