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Good voltage for 1100T @ 4.0 GHz?

post #1 of 15
Thread Starter 
I've achieved 4.0 GHz with 1.440 V at the moment. I could probably decrease it a notch, too. How does that compare to other Thubans?
post #2 of 15
1.44v is reasonable. what is your ref. clock and multi? it you hit 4GHz on multi alone that's an incredibly low voltage. Is it stable? i.e. prime95 for 6+ hours. Even though you might be able to start at 4GHz on 1.44v that doesn't necessarily mean that it is stable. Additionally stability depends on your LLC (Line Load Calibration); the the motherboard will increase voltage to the CPU when it is under load it does this to compensate for the voltage drop that results from a sudden increase in current draw. Though most of the time the LLC overcompensates and the Vcore increases by about 20 millivolts so if your CPU idles at 1.44v under load the vcore will likely be around 1.46v which is still not bad, especially with an H80 temps shouldn't be an issue.
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post #3 of 15
Thread Starter 
Multiplier is 20 x 200.7 MHz. And it is true that 1.440V is a bit low, it seems. ~10 minutes of Prime95 blend already returned one rounding error (Intel Burn Test was fine though, hm).
post #4 of 15
That sounds about right to me. I had to juice mine up to 1.48 or so for 4.2 at 200x21, but during the summer I ramped down a bit to right around where you are for 4.0 at 200x20 with my 1090t. You can 'safely' run around there. I had a few rounding errors after some time at 4.2, but I never have stability issues gaming or under heavy workload with what I do. I think Prime burn-in testing is overrated.
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post #5 of 15
1.44 is not shabby. I use 1.44 for 4.24ghz on my 965 (10 day folding stable).

I'm thinking bump it up to 1.46 and try again.
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post #6 of 15
Thread Starter 
It's bluescreened on me twice since I wrote my second post.
Currently sitting at 4.0 @ 1.464 ~ 1.476V. Seems you guys have got better chips than I do.
post #7 of 15
Keep bumping the voltage. Your not stable yet.

Mine is 1.476v @ 4.5GHZ ~ 24HR Prime95 stable, 24/7 Folding stable
post #8 of 15
Thread Starter 
The first, mere twenty minutes of Prime95 blend @ 1.476V have been ok until now. Disappointingly high voltage though.

ALUCARDVPR, that's an insane chip you've got there, compared to mine D:
post #9 of 15
I was able to lower my 965 to 1.2 volts @ 3.8ghz..but it would not stay stable @ 4 ghz under 1.4v
post #10 of 15
Thread Starter 
I seem to have hit a bit of a wall for 4+ GHz. I'd need to pump over 1.5V into it, which doesn't seem like a Good Idea.
I'm guessing that, no matter the temperature, a lot of voltage is simply bad for the CPU?
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