How bad an idea is running this overclock (5 GHz 1.47v 2600k on NH-D14) 24/7?

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tackle70

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See topic - I recently got my 2600k up and running with a noctua nh-d14 cooling it. I have it at 5 GHz (simple x50 multiplier) with 1.465 volts on an ASRock z68 extreme7 gen3 board.

It is not really prime95 stable... I think it may pass hours of testing, but small FFTs (specifically 8k) make it get WAY too hot... it is between 90-95C during that test (which is 10-20C hotter than other tests make it). I'm not willing to really run the test for hours to see if it actually survives.

However, during other prime95 tests, 3dmark11 physics loops, gaming, etc, temps stay at 75C or less. Idle temps are 25-30C. So, I'm thinking that this is a stable clock for my purposes, since I don't do anything more CPU intensive than gaming. Is this a terrible idea? I do love the idea of a 5 GHz CPU, but if it means that the chip is only gonna last like a year, I'll scale it back to 4.7-4.8 and see what the temps are.

Thanks.
 
The highest I would put my cpu at is 1.35-1.4v anything higher and you are likely to kill your cpu off quicker for 24/7
 
Yeah, get down to 4.5/6/7/8 for 24/7 and drop them volts. Not going to be an everyday difference between that and 5g.

Good to get the 5g as a one off tho, run some benchies and record results for hwbot.
 
Thanks for the advice
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I'm a bit bummed... I think I got bad advice as to what to expect from the Noctua, as several people had told me (on other sites) that 5 GHz was attainable as a stable clock with it. I'm currently thinking that is only the case if you got a beastly chip that doesn't need more than 1.4V on it to do 5 GHz.

I'll see if I can get 4.7-4.8 running at < 1.4V

On the other hand, my chip seems to do 4.5 GHz just fine on stock volts! So maybe if I start feeling cautious I'll just leave it there.
 
Yeah I just got this up and running last week and the goal was getting as high an OC as possible on the 2600k, so I didn't mind spending extra cash on the mobo. I've really liked it so far... it's my first time going with an ASRock board and I've been pleasantly surprised.
 
Also, is it normal to see two corse getting 3-5C hotter than the other cores? I've reset the heatsink a couple times but I keep getting this phenomenon and I'm not sure if I'm doing something wrong or not.

Currently stressing 4.8 on 1.4V and max temps dropped from like 96 previously to 76 now... 1.47V must just generate too much heat for the noctua's heat pipes to pull away from the CPU.
 
It is, but that's some high voltage. You wouldn't run those kind of volts on any cooling system 24/7.
 
The noctua is a brilliant cooler. But that's asking too much! I'd think even water cooling would struggle to do much better. It's simply too hot. And volts are too high for 24/7 use. I hear 1.4vcore is maximum one should use for 24/7 use. It's not so much a heat issue but apparently the chip can only cope with so much vcore....so I hear.
 
What do you think about 4.8 GHz @ 1.38V with max temps in the 75-80C range, for 24/7 use?

Should I step back farther than that?

Again, thanks for all the help - looks like I just got bad advice from people on other sites who indicated that 1.5V was the max safe 24/7 voltage.
 
Please go a bit lower. The temps are still to high for 24/7 use. I am currently @4.8GHz- 1.39V and 48°-58°C depending on the room temps but I have heard that you should never go over 74°C
 
Hmmm... what about the voltage? What cooling are you using to get those temps? I'm assuming that's on a full water loop.

I'm a bit less concerned about the max temps, since they only occur during a full run of prime95 small FFTs. During other prime95 tests it stays around 67-68C, so I doubt during any of my normal use (e.g., gaming) that it will ever get much above 65C.

Once it runs at this clock for 6-8 hours and I know it's stable, I'm also going to mess with the settings so that the voltage is only applied at load... don't need 1.38V while it's just sitting there at x16.
 
You can see my rig here

I am folding 24/7 so these are my temps all the time but at 5.0 I had around 68°C and at 5.2 it was reaching 74°C

I had noctua NH-D14 for a month before I switched to water and it's probably the best air cooling ever but water cooling is just way more fun and if you get it right it just looks so sexy
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Sadly I couldn't fit water cooling into the budget for my new rig (just upgraded from Phenom II 960t to i7-2600k + CF 7970s + Corsair AX1200 + Storm Trooper + OCZ 240GB SSD)
 
You can always add one later
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I have been updating since January an won't be finished until June. Just adding more when I have the money
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OMG, you either have your noctua on wrong, it's broke, or you are in a hot environment. My H100 which is similarly speced in cooling performance never gets above 80c at 1.5v 5ghz.
 
Honestly mate if your only gaming your not going to see an increase of performance with a CPU overclock on a i7 anyway. there's no way your GPU setup is being bottlenecked by it ! I'd go with a healthly 4.5 GHz and leave it at that. and tbh thats still overkill the only reason i use it is because i render video's
 
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