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1.45 Vcore too much for 24/7 overclock Sandy Bridge? - Page 2

post #11 of 19
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Quote:
Originally Posted by compudaze;12463795 
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?

That was under load and idle. I've backed off to 1.375 @ 4.8GHz and called it a day. I'm done with worrying my CPU is going to spontaneously combust.
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post #12 of 19
mine is under load 24/7 at 1.49v
post #13 of 19
Quote:
Originally Posted by tito13kfm View Post
That was under load and idle. I've backed off to 1.375 @ 4.8GHz and called it a day. I'm done with worrying my CPU is going to spontaneously combust.
That's not the worry, the worry is the voltage damaging your cpu over time. It has been suggested by many that 1.35 is the official high point. While Intel says these chips can do 1.52 volts, it's probably not good in the long term.
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post #14 of 19
Quote:
Originally Posted by ehpexs View Post
I'm actually on onset voltages (-0.20), it's a lot better way of overclocking than going for a constant amount.
not really. @ load, the constant voltage is better. @ idle offset is way better.

also, the 1.35v crap has been demolished. intel hasnt changed anything to their recommended amount of voltages, so you're safe. i wouldnt go past 1.45

i would even stay lower because there's no point in a high clock unless you fold or w/e

im @ 4.8 with 1.35v folding 24/7
used to be 4.5 with 1.25v folding.
Edited by Kick - 2/20/11 at 8:27pm
    
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post #15 of 19
Quote:
Originally Posted by LethalRise750 View Post
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..
If you have sp1 it takes more vcore to stable it unfortunately.... and i use linx with updated linpack 100 runs rather than the run it 10-20 times and you are good to go crap. Prime for 24 hrs is also good although i havent gotten to time to do it more than 12 hrs.
Edited by kevink82 - 2/20/11 at 11:05pm
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post #16 of 19
Yeah, you could also run occt, 1 hr stress test.
post #17 of 19
I have not noticed any problems running 1.45v load 24/7. I've had it at 1.43 for over a month now. Temps max out at 61c gaming. Personally I would max out at 1.45 for air cooling. 1.5v to 1.51v for water cooling.
    
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post #18 of 19
Okay 1.35v is safe...


anyone got an i5-2500k who reach 5ghz with 1.35v?
post #19 of 19
Quote:
Originally Posted by kevink82 View Post
If you have sp1 it takes more vcore to stable it unfortunately.... and i use linx with updated linpack 100 runs rather than the run it 10-20 times and you are good to go crap. Prime for 24 hrs is also good although i havent gotten to time to do it more than 12 hrs.
Oh I'm aware of SP1, it's because of the AVX Instructions. But dang, I can do 4.6 on 1.3v stable lol. So like I said.. not every chip is the same I guess =P (Currently at 4.8/1.37v)
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