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dual XEON E5-2690 v2 support (2x10=20 cores)

Posted: Mon Dec 02, 2013 11:26 pm
by QuEP
Gentlemen,
I guess Core Temp 1.0 RC6 cannot reliable monitor this fairly new 22 nano CPU 's yet, because the XEON 2600 series is not mentioned in the CPU list yet.
Right now the control software of NZXT Kraken X60 Watercooling is only showing water temperatures because for CPU temperatures it is relying on values from "Open Hardware Monitor", which also fails to show Core temperatures (from 1 CPU it only shows loads from 6 Cores, and from the second CPU it does show all 10 core loads, but no temperatures).
I suppose the indirect measurement of the water temperature is good enough to regulate fan speed, but in order to adjust its Fan-Temperature Curve , I feel I should monitor Core temperatures at least manually.
Is this assumption correct ?
Any plans on supporting E5-2690 v2 ?
For the time being, any alternative ideas ?

Re: dual XEON E5-2690 v2 support (2x10=20 cores)

Posted: Tue Dec 03, 2013 6:48 pm
by The Coolest
Core Temp should work on any new Intel processor, it's possible that some are still not supported properly or there are bugs.
A screenshot showing the problem and a register dump (tools menu) will help me see what is wrong and get it fixed.

Re: dual XEON E5-2690 v2 support (2x10=20 cores)

Posted: Wed Dec 04, 2013 4:22 am
by QuEP
Ok that sounded so promising that I downloaded and installed the latest version.
It actually seems to work slick and without problems. My compliments to you !
Question is if it shows the right temps, or is the algorithm not calibrated to this new CPU yet ?
It seems to show roughly 5°C low at idle ( Bios monitor at idle is around 33 to 35°C, and Water cooling medium also, but Core Temp varies from 25 to 28° C)). But then again accuracy at the ambient end is bound to be less accurate then around stressed temperatures as I recall.
During rendering the two NZXT Kraken X60 double radiators keep the water temperature just below 40°C by 8 Push Pull fans at reasonable silent 1250 rpm ( 2000 rpm max is quite noisy but not yet needed). This seems to be more consistent with Core Temps readings which vary from 38-43° C. At this moderate temperature Intel kept all 20 cores running at 3300 MHz for an hour, which is 50% of Turbo. Not bad without any tweaking on the excellent Asus board yet (especially since it is only running around 90W of its rated 130 W Power).
I also bumped up the fans to their max 2000 rpm, limited the rendering to the even cores in order to give it a chance to cool down some. After 10 minutes it stabilized 3°C lower on water and core temps, but this didn't result in faster frequency. After running 10 minutes on all cores again the water temperature stabilized halfway at 38.3°C ( 1.5°C is not worth the noise of 2000 rpm fans I guess ).


Anyhow , if these core temps are reliable I can probably squeeze some more Watts and MHz through this set up which is already rendering roughly 5 times faster then my single Xeon X5690 6 core Laptop ;-).

Please check attached register dump and screendump
CoreTemp-Scr.png

Re: dual XEON E5-2690 v2 support (2x10=20 cores)

Posted: Wed Dec 04, 2013 4:33 am
by QuEP
And here is the Register dump (I couldn't figure out how to attach 2 files )
CoreTemp-Dump2.txt

Re: dual XEON E5-2690 v2 support (2x10=20 cores)

Posted: Wed Dec 04, 2013 10:24 am
by The Coolest
I'm very happy to see that it's actually working properly. Regarding temperatures, as you said, at the low end of the scale the temperature may be a bit off, but still in the ballpark.
The closer the temperature gets to the TjMax value, the more accurate it becomes, but it is never 100% accurate.
The water temperature sensor may also be off by a little bit, it really takes a difference of a couple of degrees here and a couple of degrees there to see a relatively big difference.
Also, as far as I know power saving features do not always work in the BIOS, so the temperature when you're in there will most likely be higher than when the system is sitting at the desktop idling.