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Old September 28, 2011, 12:59 PM
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Post 2600k Voltages! Yay!

Allright, first, Out of your experience, or w/e..

What would be the safe max voltage for 24/7 use?

I'm at 1.31v @4.6Ghz, and I'm SURE that's fine for 24/7 use... right?

And secondly, share with Canada your Speed and Voltage and Usage of your CPU!

P.S - SOrry, for n00b-ness, i JUST upgraded from my golden q6600.. totally new to this stuff now
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Last edited by Beastylemon; September 28, 2011 at 01:16 PM.
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Old September 28, 2011, 01:02 PM
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Its not just the voltage you need to worry about. You also need to worry about what temperatures you're at on full load as that could kill or shorten the life span of your chip as easily as over volting it can.

What are your load temps so far?
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Old September 28, 2011, 01:03 PM
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Load temps never pass 71C. I have an H100, but the only reason its high, is cuz my room is BLAZING hot.
In my normal temp room basement it maxes out at 50 after 1h of prime95

Edit- 71C after 1hour of prime95. Around 50 just playing games. This is with 1.31v.

What would be a safe prime95 temp? Or what should my temps never pass?
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Last edited by Beastylemon; September 28, 2011 at 01:12 PM.
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Old September 28, 2011, 01:38 PM
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IIRC, my voltage is set for 1.38V @ 4.8GHz (also with an H100), and my typical load temps don't go above 70C. This is only on one core, the others are a good 4 - 5C lower (and I've carefully re-applied the thermal paste already, to no avail), so I just monitor that core and try to keep it below 70.

I had it running for a good 4 months between 70 - 75 on the stock heatsink, but this was only at 1.2V and 4.1GHz.
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Old September 28, 2011, 01:42 PM
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Yeah...agreed with Arninoth about the temps. But looking at your voltage, 1.31V is just fine. I've heard some folks say you can go as high as 1.520V as that's what Intel has published for SB CPU's (granted this may have changed...so, maybe check that out). IMO, 1.520V is far too high. When I started overclocking w/ SB, the general consensus was to stop around 1.350-1.375V...which seems quite reasonable. So far, keeping my voltage @ 1.300V I've experienced no noticeable degradation of my CPU.

As for my 2500K, it's a bit of a voltage pig...I'm not hitting 5GHz with this one. However, temps are quite good. In all fairness, I do have my PC in my basement which is kept cool.

4.4GHz = 1.300V (warmest core @ 52C with Prime95 small FFT)

4.0GHz = 1.180V (warmest core @ 47C with Prime95 small FFT)

Day to day, I usually run at just 4.0GHz as it's plenty fast for what I do. I don't believe in stressing the CPU any more than I need to. For benchmarking, however, I'll run it faster. I haven't tried faster than 4.4GHz yet...I might shoot for 4.6GHz at some point, but that's about as fast as I think I can go before the voltage gets too high for my comfort.
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Old September 28, 2011, 01:44 PM
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Nothing wrong with that voltage, you can go 1.5xxx if you wanted to.

However, stability is the real issue. I wouldn't give a machine the "stable" label unless it was doing prime95 for 8 hours at the minimum.

bah, ninja'd
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Old September 28, 2011, 01:59 PM
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Thanks for the info guys.
Also, what is the difference between the voltage in the BIOS, and the voltage in CPU-Z?

When you tell me to stay under 1.5v, is that 1.5 in BIOS? or CPU-Z?
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Old September 28, 2011, 03:03 PM
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Give LinX w/AVX a whirl on Win7+SP1 if you want to give your cooler a workout :)

CPU-Z will report the "actual" voltage, BIOS set does not necessarily mean that is the voltage under load. vdrop, vdroop, and load line calibration will all give you a difference between BIOS set and CPU-Z.
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