i7 6950X temperature !?

Gripen90 · 2 Nov 2018 at 11:26

Wednesday I installed my new i7 6950X CPU and obvious it's a bit hotter than my previous i7 [email protected] (1.252v).

I am just wondering if these temperatures are OK under stress testing ?
(I know I won't hit them under daily use with my gaming & content creation).
I am running the CPU at 4.2GHz 1.3v with a Phanteks PH-TC14PE Dual Tower 2x 140mm fans cooler. The fans run at max speed 1600rpm as soon as the CPU hits 70°c (set custom profile in BIOS)

I run AIDA64 Extreme with both CPU/FPU stress test and one with CPU/FPU/Cache stress test.

I have tried running OCCT 4.5.1 but it just aborts testing when a core reaches 85°c while AIDA64 keeps going on !?

Gripen90 · 2 Nov 2018 at 11:30

The fan setup is 2x120m top exhaust, 4x 120m pull/pull front intake, 1x 20m bottom intake, 1x 120mm rear exhaust, 1x 120mm side intake (by the graphics cards when the side panel on.

Minstadave · 2 Nov 2018 at 11:30

Looks normal for this CPU. Overclocking without delidding these get very hot!

HazardO · 2 Nov 2018 at 12:55

Minstadave said:
Looks normal for this CPU. Overclocking without delidding these get very hot!

6950X is Broadwell-E, last of the soldered HEDTs I thought, does de-lidding really help?

Minstadave · 2 Nov 2018 at 13:28

HazardO said:
6950X is Broadwell-E, last of the soldered HEDTs I thought, does de-lidding really help?

Sorry forgive me, getting my gens mixed up. Broadwell is as you say soldered, delidding isn't easy or particularly helpful.

Temps still look OK for 10C/20T on air. Anandtech had similar thermal issues:

https://www.anandtech.com/show/1033...900k-6850k-and-6800k-tested-up-to-10-cores/10

Tomshardware showed the power consumption hits 240W for the CPU alone at 4.3GHZ:

https://www.tomshardware.com/reviews/intel-core-i7-broadwell-e-6950x-6900k-6850k-6800k,4587-10.html

HazardO · 2 Nov 2018 at 15:55

I'ts a power hungry CPU, so is my 6900k which is why it's under water with a 360 Radiator. If the Max temp is hitting nearly 90C it will shorten the lifespan, I would consider dropping the clocks or water cooling.

8 Pack · 2 Nov 2018 at 17:00

No it wont shorten the lifespan...... why are people typing this stuff.....those temps are fine..... play your games etc have fun...

swealp · 2 Nov 2018 at 17:12

I had almost same setup, worked fine.

Disco_P · 5 Nov 2018 at 13:52

Those temps look alright for a stress test. I'd assume that when you are doing your daily stuff temps are much lower?

OCCT has a killswitch when any core reaches 85C. This can be raised or disabled in the program settings.

Is 1.3v for a 4.3Ghz 6950x normal? My only reference is my 5820K does 4.3Ghz at 1.2v but that is 4 less cores and a different architecture.

Gripen90 · 5 Nov 2018 at 14:26

Disco_P said:
Those temps look alright for a stress test. I'd assume that when you are doing your daily stuff temps are much lower?

OCCT has a killswitch when any core reaches 85C. This can be raised or disabled in the program settings.

Is 1.3v for a 4.3Ghz 6950x normal? My only reference is my 5820K does 4.3Ghz at 1.2v but that is 4 less cores and a different architecture.

Ok nice, I wasn't aware you could alter the temperature limit in OCCT.

What I have seen as for OC'ing the 6950X some take 1.25v for 4.2~4.3GHz and others need 1.3v and some require 1.35v for 4.3GHz. It seems it varies a bit.
I used to have a two i7 5820Ks both running 4.1GHz and one ran at 1.2v and the other could get away with 1.18v. They could perhaps have run faster like 4.2~4.3GHz at that voltage, but I never really went higher. I just plugged them in set multiplier to x41 and set the voltage +off set.

doyll · 5 Nov 2018 at 18:02

Gripen90 said:
The fan setup is 2x120m top exhaust, 4x 120m pull/pull front intake, 1x 20m bottom intake, 1x 120mm rear exhaust, 1x 120mm side intake (by the graphics cards when the side panel on.

I think if your switched the forward most top fan to intake and didn't use the one behind it at all you would have lower CPU temps. That front top one as exhaust is drawing cool air coming in the front up and out of case before it does any cooling and in doing that it is drawing the heated exhaust off of your GPU up where it's mixing with cooler air going to CPU.

Also, remove any unused PCIe back slot covers so there is more back vent area around GPU and better front to back airflow to move GPU heated air back and out of.