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i7 3820 - 4820 Overclock Club - Page 267

post #2661 of 6506
Quote:
Originally Posted by LayerCakes View Post

Quote:
Originally Posted by t4ngent View Post

How hot?

In your last screenshot it looked like the max was about 70C.. thats not a bad load temp

I wouldn't worry unless your pushing into the high 80's or 90C range.

When I've got the system under full load im hitting 90. That's gpu's + cpu

4875Mhz @ 1.45v hitting 90s under load is really too high for custom liquid cooling even tho there is GPU in the system. How is your loop setup and what is your ambient?
post #2662 of 6506
Quote:
Originally Posted by USlatin View Post

Thanks Tsm, I thought I read that on some other thread, so I am glad to hear that again on this thread. That is what I think I might clock it at for a while (unless higher is safe and easy... is that a possibility?), just till I upgrade my cooling at least a bit. And what would you say is the ceiling in terms of clock for air cooling?

And what is the chip's temperature threshold? What are we looking to stay under? edit: I mean, as I am sure all of you know a 66.8C Tcase spec given by intel, which is is pretty low, could I expect to stay under this on air at 4.3Ghz

(just looking for rough estimates thus far so hope u guys don't mind the basic and general questions)
TJmax for 3820 is 100C. This is when CPU will start thermal throttling if it work according to Intel specification. If your CPU start throttling at lower temp, then your motherboard is "overriding" it.

Tcase is not referring to core temperature but TJmax is. As far as I know we can't monitor Tcase, so it's hard to make sure it doesn't reached Tcase. We can monitor TJmax though. Anyway, you shouldn't worry about temperature threshold because CPU will thermal throttling when core temperature reached 100C (TJmax). It happen automatically. There also another signal called THERMTRIP signal built in the CPU where it will shutdown your CPU to prevent catastrophic overheating. You will not kill your CPU because running near or reached TJmax. What could kill your CPU if you feed too much voltage to it. IMO vcore shouldn't exceeds 1.6V.
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post #2663 of 6506
I'm a little new at this but I managed to get my 3820 up to 4.3 GHz. I've been having trouble going above that. I have my multiplier at 43 and my BLCK at 100 MHz at 1.4v. Is the voltage too high? Sorry I'm a noob to overclocking. Any advice would be appreciated.
post #2664 of 6506
Quote:
Originally Posted by DialTo11 View Post

I'm a little new at this but I managed to get my 3820 up to 4.3 GHz. I've been having trouble going above that. I have my multiplier at 43 and my BLCK at 100 MHz at 1.4v. Is the voltage too high? Sorry I'm a noob to overclocking. Any advice would be appreciated.


Way too much voltage. Bring it down to 1.3v or under. Read the rive uefi guide.

http://www.overclock.net/t/1186959/rampage-iv-extreme-uefi-guide-for-overclocking
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post #2665 of 6506
Quote:
Originally Posted by X79Extreme7UK View Post

4875Mhz @ 1.45v hitting 90s under load is really too high for custom liquid cooling even tho there is GPU in the system. How is your loop setup and what is your ambient?

Agreed. And even with 2 GPU, the restriction on those EK blocks is not *that* bad. A single DDC pump should be able to handle that loop with only a modest increase in temp vs dual loops or series pumps with the same radiator setup.

I've looked at your build pics and the loop looked ok to me, so I would say the issue is most likely either poor contact (too much or not enough thermal paste, or not enough mounting pressure) or severely restricted flow due to defective or failing pump

Probably more likely a bad pump if you are seeing 90C on all 3 devices.
Edited by t4ngent - 2/25/13 at 8:32pm
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post #2666 of 6506
Thread Starter 
Quote:
Originally Posted by USlatin View Post

Has anyone OC'ed the 3820 with a GIGABYTE GA-X79-UP4? I am not looking to find the limit, more hoping to get to about 4.3Ghz or thereabouts, but on air, and for it to be rock-solid stable.
LayerC, have u thought about throwing in an additional very small and very low drag rad in between the GPU and CPU blocks to give it a little lower temps going in?
Ive got one . The best i could do was 4.5Ghz@1.29vcore mad.gif No overvolt crappy vdroop this was on the first bios for it though . R4F does it for me wheee.gif
Quote:
Originally Posted by LayerCakes View Post

When I've got the system under full load im hitting 90. That's gpu's + cpu
eek.gif There is something not quite right there......

Heres my 4.9Ghz 3hrs P95 blend thumb.gif

But I don't have gpu's watercooled either tongue.gif
Quote:
Originally Posted by Nitrogannex View Post

No, UD7 and Assassin2 also do quad x16
How did you go with those bios screeners questionmark.gif
Quote:
Originally Posted by X79Extreme7UK View Post

4875Mhz @ 1.45v hitting 90s under load is really too high for custom liquid cooling even tho there is GPU in the system. How is your loop setup and what is your ambient?
Gidday Geezer wave2.gif Might need a fan on the M/Board I pull 90c when benching with 1.65 + vcore laughingsmiley.gif
Edited by HOMECINEMA-PC - 2/26/13 at 2:21am
post #2667 of 6506
Wow, lots of boards to look at thanks everyone. And thanks for all the other answers too.

I noticed a few posted can handle 8x 8x 8x 8x or better but only have 4 DIMMs. What would you guys say would be the best OCer out of all boards that can manage both four 8x and also have 8 DIMMS?
Edited by USlatin - 2/25/13 at 11:41pm
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post #2668 of 6506
Quote:
Originally Posted by DialTo11 View Post

I'm a little new at this but I managed to get my 3820 up to 4.3 GHz. I've been having trouble going above that. I have my multiplier at 43 and my BLCK at 100 MHz at 1.4v. Is the voltage too high? Sorry I'm a noob to overclocking. Any advice would be appreciated.

Yea w tf I'm running 4.3GHz at 1.22V. . .
post #2669 of 6506
Quote:
Originally Posted by X79Extreme7UK View Post

4875Mhz @ 1.45v hitting 90s under load is really too high for custom liquid cooling even tho there is GPU in the system. How is your loop setup and what is your ambient?

Res > pump > 200mm rad > gpu > gpu > cpu > 360mm rad > res

The two gpu's are in series.
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post #2670 of 6506
Quote:
Originally Posted by LayerCakes View Post

Res > pump > 200mm rad > gpu > gpu > cpu > 360mm rad > res

The two gpu's are in series.

Should have went CPU first as gpus are better with heat than CPUs
I should game.
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I should game.
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