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4.1Ghz Safe temps?

post #1 of 6
Thread Starter 
Yesterday I thought to myself wouldn't it be nice if I could achieve 4.2GHz? Sadly it crashed, temperatures where dangerously high. 4.2Ghz with 1.28V temps where in excess of 90C. I'm on air cooling by the way so I guess it's expected. So What was the next best thing, 4.1 of course I achieved a stable OC thus far 8hours of prime and 50 runs of Linx. Current settings are 1.28Vcore and 1.3V IOH, I was wondering if having that level of IOH voltage (1.3) unhealthy? Also if the temperatures are fine or if I should drop back done to 4GHz for longevity.?338
Edited by Mr SniffelzZzZ - 2/16/12 at 9:36am
post #2 of 6
IOH is applied directly to the IOH, basically the Northbridge. There is no reason to increase it from stock IMO. CPU vcore and QPI/DRAM are pretty much the only voltages that need changed, and PLL you could even try undervolting slightly if your board allows it. CPU vcore obviously will help you stabilize CPU clocks, and QPI/DRAM voltage helps stabilize high memory and uncore frequency (due to raised BCLK). My 920 QPI/DRAM needed 1.28v for 1600mhz CAS 7 RAM and 1.34v for 2000mhz CAS 9 to achieve stability. Never had to touch IOH, ICH or anything else and I could even get by with an undervolt to 1.75v on PLL. YMMV.

Those temps are fine, don't worry about it.
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post #3 of 6
What cooler are you using? I was hard pressed to find my NH-D14 reaching over 75c at 4GHz with the same 1.28v.

Temps under 80c when stressing is fine and dandy as your gaming load will be nowhere near that hot. My 2600K stresses at like 65c but games can barely get it to 45c on each core.

What are your in game temps? Do a reset on HW Monitor and play a game for a half hour and see where you are.
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post #4 of 6
Important info when talking about temps is what is your average ambient temps and cooling solution.

Judging on my personal experience, Megahalems with a single 38mm Ultra Kaze with 25C ambient gives me on average 72C (75C hottest core) load temps with HT off, that's at 1.25V

So, having HT on adds about 10C plus extra voltage adds on top of that. Unless you have a really beefy cooling it's hard to do anything about it and extra 100-200 MHz don't give that much anyway.
post #5 of 6
Thread Starter 
Prolimatech Megahalems push pull.
post #6 of 6
Thread Starter 
Ambient temps are about 42C on average.
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