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Xeon Hacking and Overclocking X79/X99 [Beyond X58] - Page 65

post #641 of 1530
I reseated the heatsink (Cooler Master Hyper 212+ with two fans) with some arctic mx-2 paste.

I tried overclocking it, 4.2Ghz stable at 1.184V, I'm getting under prime95 temperatures of 55~56°C with a moderately high fan speed, 60°C with fans low.

How much further can I expect to pull it on air? What temps should I expect to get?

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post #642 of 1530
Your temps are fine. Keep things under 80-85C. Lots of headroom there.
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post #643 of 1530
in fact 4.5 GHz has been a far too easy hit... 1.304V, prime95 stable under full test, 62-63°C max.

what's next?

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post #644 of 1530
Well first I'd suggest not using BCLK like that since it's linked to many busses including SATA. You'll want to use the 125 strap + multi combo since it's limited at 43x.
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post #645 of 1530
Tried that. Upped BCLK to 125, Vcore to 1.35 and multiplier to 37. 4625MHz well stable, albeit quite hot... I'm hitting 78-82°C on all cores, which means I got to the maximum point this heatsink can go. HWmonitor shows 140W in, a big leap compared to the 110-ish of 4.2ghz operation.




I won't dare to push it higher. Still, what could I ask of a 60€ cpu?
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post #646 of 1530
Quote:
Originally Posted by Andrea87 View Post

Tried that. Upped BCLK to 125, Vcore to 1.35 and multiplier to 37. 4625MHz well stable, albeit quite hot... I'm hitting 78-82°C on all cores, which means I got to the maximum point this heatsink can go. HWmonitor shows 140W in, a big leap compared to the 110-ish of 4.2ghz operation.




I won't dare to push it higher. Still, what could I ask of a 60€ cpu?

I'm no expert at this but when overclocking my 1660 to 4.5 i noticed that when usind the 125 Strap i needed a lot less Vcore when i lowered the CPU PLL all the way down to 1.55V (stock was 1.81)

So now instead of 1.37V Vcore i only need 1.33V for it to be primestable. Makes a big difference in Temps for me.

Most people seem to have best results with 125 strap when using CPU PLL lower than 1.7V


I'm btw still stuck @4.5 GHz with 125x36. (can't get 4.5 stable with 100x45 unless i bump CPU PLL to 1.9, 4.6 / 4.62 just won't happen with this chip-board combo)
     
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post #647 of 1530
Quote:
Originally Posted by DoctorAsBest View Post

I'm no expert at this but when overclocking my 1660 to 4.5 i noticed that when usind the 125 Strap i needed a lot less Vcore when i lowered the CPU PLL all the way down to 1.55V (stock was 1.81)

So now instead of 1.37V Vcore i only need 1.33V for it to be primestable. Makes a big difference in Temps for me.

Most people seem to have best results with 125 strap when using CPU PLL lower than 1.7V


I'm btw still stuck @4.5 GHz with 125x36. (can't get 4.5 stable with 100x45 unless i bump CPU PLL to 1.9, 4.6 / 4.62 just won't happen with this chip-board combo)

Interestingly I've never gotten 125 strap to post on my board with multiple 1650's and one 1660. Same issue on the second x79 Deluxe. 100mhz works fine though, was able to clock up to 5ghz at around 1.4v, temps were quite high though.
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post #648 of 1530
I got 105 base clock on my E5 2683 v3 now. Still though the turbo and stuff is a little odd. I think ill try what someone suggested here with the intel tuning software.



Best I've got so far in cinebench. wish i could get turbo locks across all cores .. Ah well still works decent so far.

i will keep messing around.
post #649 of 1530
Found this:

http://www.ebay.com/itm/Intel-Xeon-E5-2666-v3-QS-2-9-3-2Ghz-10-Core-22nm-135W-Close-to-E5-2687W-V3-/272329150012?hash=item3f68150e3c:g:WgMAAOSwARZXoZsR

399 bit too much for it isn't it? What kind of single thread performance can one expect from Haswell at 3.2 GHz? If someone could make a single threaded CB run of Haswell at 3.2, I'd be grateful!
post #650 of 1530
Quote:
Originally Posted by CrazyNightOwl View Post

Found this:

http://www.ebay.com/itm/Intel-Xeon-E5-2666-v3-QS-2-9-3-2Ghz-10-Core-22nm-135W-Close-to-E5-2687W-V3-/272329150012?hash=item3f68150e3c:g:WgMAAOSwARZXoZsR

399 bit too much for it isn't it? What kind of single thread performance can one expect from Haswell at 3.2 GHz? If someone could make a single threaded CB run of Haswell at 3.2, I'd be grateful!

Probably in the range of a stock 3930k (around 130-135 single thread). That seems to be a decent price considering the clocks.
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