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Can anyone here confirm 24/7 OC for 5GHz 2600k @ ~1.5v - Page 2

post #11 of 21
My OC has been stable for about an hour of Prime and I haven't had any issues since then. I can try benching longer for you to verify sustained stability. (and for myself of course )
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post #12 of 21
Quote:
Originally Posted by DanglingPointer View Post
Excellent! I'd be interested in ur on-going testing. U planning 24/7 @ 5GHz?
I'm shooting for that yes. Still tweaking. Prime ran fine but I shut down to redo my loop and couldn't boot so I'm back tweaking.
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post #13 of 21
Quote:
Originally Posted by DanglingPointer View Post
Thanks! I'm still in the Core2Quad era (see my signature)! I'll be using the same watercooling rig I got now. (also on signature)



I have read at a forum in Toms Hardware that the 2700k is the same chip as the 2600k with only an extra multiplier. Apparently everything else is the same internally. Only registered data for type of processor and ink of case is different. There are a few guys on that forum upset at Intel for what looks like a marketing and business stunt to fool people into buying the same chip re-branded with extra multiplier. If they are correct then the theoretical limits of OC on average will be the same as a 2600k with the same benchmark results on average assuming all other parts in rig are similar.



Excellent! This is the kind of stuff I want to see! No anomalies? BSOD? unexplained errors?



Excellent! I'd be interested in ur on-going testing. U planning 24/7 @ 5GHz?
It has only been 2 months but so far good. Just make sure that you keep it cool. SB likes low temps with higher voltage.
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post #14 of 21
im interested in this too, if possible i'd like to run the 6 core SBE @ 5ghz for production renders (100% utilization for anywhere between 1min - couple days)
post #15 of 21
I've had 5Ghz stable on blend for an hour or something but never really could get it running 24/7 in my sig rig.
My board sort of caps out at 1.5Vcore without using a global offset that also affects idle voltages.

I guess I'd need a good bit more than 1.5V and that somehow feels scary to me
Edited by mosi - 10/27/11 at 12:07am
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post #16 of 21
Thread Starter 
Quote:
Originally Posted by AMC View Post
It has only been 2 months but so far good. Just make sure that you keep it cool. SB likes low temps with higher voltage.
Fantastic! That's wot I want to read! Hopefully there are people out there who have had it longer with no dramas.

Could I assume that u have stressed it to 100% for many days and gotten away with it with no errors on woteva stability testing software?

Essentially when my current pc is doing nothing, I have BOINC running. It has been doing that since Dec 2009.

EDIT:
I forgot to also ask if u actively cool ur SB and how much v did u bump it up by?
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post #17 of 21
Quote:
Originally Posted by DanglingPointer View Post
Fantastic! That's wot I want to read! Hopefully there are people out there who have had it longer with no dramas.

Could I assume that u have stressed it to 100% for many days and gotten away with it with no errors on woteva stability testing software?

Essentially when my current pc is doing nothing, I have BOINC running. It has been doing that since Dec 2009.

EDIT:
I forgot to also ask if u actively cool ur SB and how much v did u bump it up by?
I ran Prime and IBT for a few hours. But remember that every chip is different. I have it water cooled. Still runs really warm when stressed so I will be testing out a new setup soon to see if it helps. I might just set it to 4.6ghz soon. 5.0Ghz is nice but no point really for my applications. I want it to run 1.4volts or less. And my chip can with 4.6ghz.
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post #18 of 21
Mine is 12hrs folding stable + 20 mins of 1792 length p95 FFT's.
Haven't done a "proper" long p95 blend run yet but I am quite confident that it's stable.
The accurate speed is 5010mhz and the voltage is 1.35 :O
And no, the IHS wasn't golden or anything
    
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post #19 of 21
Thread Starter 
Quote:
Originally Posted by AMC View Post
I ran Prime and IBT for a few hours. But remember that every chip is different. I have it water cooled. Still runs really warm when stressed so I will be testing out a new setup soon to see if it helps. I might just set it to 4.6ghz soon. 5.0Ghz is nice but no point really for my applications. I want it to run 1.4volts or less. And my chip can with 4.6ghz.
U had 5GHz @ 1.48v yeah? If u don't mind me asking, what were ur ambient temps and what were ur average temps for the cpu under full load.

Also, why do u want to run it at 1.4v? If u manage to find a way to control the temps better at 1.48v would u still prefer to run it at 1.4v? Are u worried about "electromigration" within the die at 1.48v?


Quote:
Originally Posted by Skiivari View Post
Mine is 12hrs folding stable + 20 mins of 1792 length p95 FFT's.
Haven't done a "proper" long p95 blend run yet but I am quite confident that it's stable.
The accurate speed is 5010mhz and the voltage is 1.35 :O
And no, the IHS wasn't golden or anything
R u saying u have 5GHz running on 1.35v? Wow!!!

Mate I don't mean to preach but confidence should come from empirical test results, not gut feeling. Folding uses ram a lot so even though it shows 100% cpu utilisation it is not a good overall stability test. 20mins Prime is also not enough.

Perhaps a day of each of these using OCCT...
3 different test types

CPU = no RAM tested, alot of heat generated on the CPU, errors are usually CPU-centered
RAM = Maximum error detection, tests the whole chain CPU-Chipset-Memory
Mix = CPU and RAM alternated

If they all pass then u have an awesome chip!
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post #20 of 21
Quote:
Originally Posted by DanglingPointer View Post
U had 5GHz @ 1.48v yeah? If u don't mind me asking, what were ur ambient temps and what were ur average temps for the cpu under full load.

Also, why do u want to run it at 1.4v? If u manage to find a way to control the temps better at 1.48v would u still prefer to run it at 1.4v? Are u worried about "electromigration" within the die at 1.48v?




R u saying u have 5GHz running on 1.35v? Wow!!!

Mate I don't mean to preach but confidence should come from empirical test results, not gut feeling. Folding uses ram a lot so even though it shows 100% cpu utilisation it is not a good overall stability test. 20mins Prime is also not enough.

Perhaps a day of each of these using OCCT...
3 different test types

CPU = no RAM tested, alot of heat generated on the CPU, errors are usually CPU-centered
RAM = Maximum error detection, tests the whole chain CPU-Chipset-Memory
Mix = CPU and RAM alternated

If they all pass then u have an awesome chip!
I will let you know the temps on the new loop. And there is no point stressing the cpu for the extra little bit of MHz in my opinion. Electron migration happens just to what extent. I just want to prolong the life of my chip and 4.5Ghz is more than enough.
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