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1.45 Vcore too much for 24/7 overclock Sandy Bridge?

post #1 of 19
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I think I might have found my magic 5.0GHz settings, but I'm a little worried that 1.45 will fry my chip prematurely. I hit 81C max on core 3 in Prime95 after a 2 hour run. The other cores peak between 72 and 79C.

So am I crazy if I use this 24/7. I have it set to clock down when idle, but Vcore remains constant. I won't call it rock solid, but it's definitely gaming stable. (Had 1 BSOD after 45 minutes before I did this current test)

Gaming my max temp doesn't go over my self imposed 72C limit so I'm comfortable with that. I don't fold, I don't encode, and I don't run Prime for a living.

Am I in for a nasty surprise 90 days from now, or would I be OK with this for a 24/7 on machine that sees about 1-3 hours of gaming per night?
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post #2 of 19
That's risky, doesn't matter how much or how little you use it.
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post #3 of 19
IMO you don't need 5GHz 24/7. I understand it for benching but for regular gaming I doubt you will notice any difference from 4-4.5GHZ which probably requires much less Vcore to be stable. Is 1.45 too much? No idea.
post #4 of 19
from what ive seen on air you dont wanna be going anywhere above 1.45 on air.. but in my mind if you dont ever stress it hard enough to push the heat past 70c then you shouldnt have any problems.. but most of my experience has been with 775 chips/ some 1366 chips
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post #5 of 19
Well if your rig BSOD probably means its not that stable with the overclock. As other stated you won't need 5Ghz for a 24/7 rig, more for benchmark and e-peen.
I back down mine to 4.6 on 1.4v and i'm under water to keep it totally stable, play games, watch movies, and some prime95 testing without ever turning it off.
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post #6 of 19
The difference for me least least, between 4.6GHZ and 5.3GHZ is 0.25 volts plus a lot of heat. For me the choice was obvious.
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post #7 of 19
Quote:
Originally Posted by kevink82;12463463 
Well if your rig BSOD probably means its not that stable with the overclock. As other stated you won't need 5Ghz for a 24/7 rig, more for benchmark and e-peen.
I back down mine to 4.6 on 1.4v and i'm under water to keep it totally stable, play games, watch movies, and some prime95 testing without ever turning it off.

1.4v seems a bit much for 4.6... But I guess no chip is the same.

As said above, 5GHz isn't worth running 24/7 since it won't give much of a performance difference over say 4.6..
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post #8 of 19
I'm actually on onset voltages (-0.20), it's a lot better way of overclocking than going for a constant amount.
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post #9 of 19
Will it pass prime95 blend test for 24H? If it does, get a better cooler and call it a day.

If not, back down and go for something like 4.8GHz on lower volts for lower temps.

For reference my SB can pass 24H prime blend at 4.8GHz and 1.40V (bios, load is 1.356V) and MAX at 72C. At 1.525V (Bios) I couldn't pass 24H blend test and it was ~80C so I said F it.

I also use the Hyper 212+.


Edit: Also, is that 1.45V under load?
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post #10 of 19
I personally stay under 1.35v. I'm currently running 4.0ghz @ ~1.260v, and I notice no slow downs in games compared to 4.6ghz. When games need 4.6ghz, I'll oc to 4.6ghz.

Only oc to what you need, unless your benching.
     
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