Thursday, January 28th 2021

At Stock All-Core Boost, i9-11900KF "Rocket Lake" Hits 98°C with 360mm AIO CLC Under Stress

Intel's 11th Gen Core "Rocket Lake-S" processor is shaping up to be one hot chip. Enthusiasts on Chinese tech forum ChipHell with access to a Core i9-11900KF sample report, that when stressed at [apparently] stock settings, in which the processor hits its all-core boost frequency of 4.80 GHz, even a 360 mm all-in-one liquid CPU cooler struggles to keep the chip from hitting 100 °C, with core temperatures reaching 98 °C. The i9-11900KF comes with a disabled iGPU, which means all of its heat is generated by the core and uncore components of the GPU. AIDA64 was used, to apply multi-threaded stress on the processor (the burn-in test), while CPU-Z reports a core voltage of 1.401 V, it's not known whether this is a manual setting, the chip's VID, or whether the motherboard is trying to stabilize the 4.80 GHz clocks.
Sources: 9550pro (Twitter), ChipHell Forums, VideoCardz
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91 Comments on At Stock All-Core Boost, i9-11900KF "Rocket Lake" Hits 98°C with 360mm AIO CLC Under Stress

#26
RandallFlagg
Chiphell has been mostly posting garbage using ES (engineering samples from last summer) and QS (Quality control samples from around August) chips that some of their members buy in the Chinese black market for such things. Those chips typically have much lower than stock clocks. So basically they are overclocking pre-production samples meant to aid OEMs in debugging their boards and to help with identifying defects in the CPUs.
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#28
thegnome
1.4v on here says enough. You could clock a 10900k over 5ghz with 1.3.
Posted on Reply
#30
newtekie1
Semi-Retired Folder
Vya DomusIs the IHS and solder this catastrophically bad ?
Is the IHS even soldered? This could be an early enough sample that they are just using regular TIM for easy of early production.
Posted on Reply
#31
Patriot
Alright, who forgot to plug in the pump again?
Posted on Reply
#32
XL-R8R
Sensationalised news post that intentionally leaves out any mention of the use of ES/QS sample chips running way above the intended speed (these are not retail CPU's with finalised design specs) with way over spec voltage of 1.4v....




Not much to see here.
Posted on Reply
#33
mrthanhnguyen
Well, its FPU test which produces a lot of heat. And that chip silicon is probably trash. It runs 1.4v at 4.8ghz. I remember my 9900ks runs 1.35v at 5.3ghz.
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#34
zlobby
Rocket, at least the name is fitting.
Posted on Reply
#35
metalfiber
Anybody that has used the stress FPU in AIDA 64 knows that it's a real and yet unrealistic number not likely to be encountered in real life. The stress CPU is the most reliable test of what one might encountered in real life.

Stress FPU 8700K...



Stress CPU 8700K...
Posted on Reply
#36
ThrashZone
thegnome1.4v on here says enough. You could clock a 10900k over 5ghz with 1.3.
Hi,
Under load on CB-R20 only uses 1.163v on auto for 5.0 max vcore 1.27v on llc-5 all core of course max temp 69c fans barely running.
Posted on Reply
#37
TheoneandonlyMrK
ThrashZoneHi,
Indeed what ever aio was used needs to be rma'ed lol
10900k does all core 5.3 at 80c max so I'd say op is fake news at best.
Under load though ?! Full 100% CPU utilisation and 5.3@80 ,you sure?!.
Posted on Reply
#38
Octopuss
AHAHAHAHA
I don't even....
Just when you thought Intel couldn't do anything more stupid.
Posted on Reply
#39
Tsukiyomi91
4.8 all-core sustained boost on stock settings (no manual OC) is kinda impressive. Temps and voltage doesn't seem right for a chip that has 2 less cores unless it's a crappy ES chip?
Posted on Reply
#40
mrthanhnguyen
theoneandonlymrkUnder load though ?! Full 100% CPU utilisation and 5.3@80 ,you sure?!.
5.5@80 prime95 small fft avx2 here. U sure?
Posted on Reply
#41
_UV_
"not known whether this is a manual setting, the chip's VID, or whether the motherboard is trying to stabilize the 4.80 GHz clocks."
could be auto, if Asrock adopt old Asus strategy of using slightly more voltage or bus speed than over manufacturers to achieve greater results in reviews, but 4.80 GHz looks pathetic in this case
Posted on Reply
#42
ThrashZone
theoneandonlymrkUnder load though ?! Full 100% CPU utilisation and 5.3@80 ,you sure?!.
Hi,
Yes I'm sure lol
Here's an old one just flashed to 2004 bios I'll run it again later just messing/ tuning with a 5.0 clock atm for everyday use it's capping out at 67c on auto vcore ... ;)
Posted on Reply
#43
docnorth
BArmsWeren't there leaks about the 10900K that basically said the same thing but then we found out it doesn't run any hotter than previous gen?

Edit: Not that I would bet much against this either!
+1. And I think leaks from the same "source".
Posted on Reply
#44
DR4G00N
8-cores @ 1.40V, no wonder it's at 100c. Auto volts on the mobo seem a bit out of whack.
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#45
Phabets70
Now please try the Aida64 stresstest without AVX or AVX-512 enabled. This is ticked by default in Aida and makes the stresstest temperatures very unrealistic. I would like to see the temps without the option enabled.
Posted on Reply
#46
ZoneDymo
DR4G00N8-cores @ 1.40V, no wonder it's at 100c. Auto volts on the mobo seem a bit out of whack.
this, the 10900k runs at lik 5.4 all core at 1.35 sooo this is a big bit of nonsense
Posted on Reply
#47
ThrashZone
Phabets70Now please try the Aida64 stresstest without AVX or AVX-512 enabled. This is ticked by default in Aida and makes the stresstest temperatures very unrealistic. I would like to see the temps without the option enabled.
Hi,
AVX testing is a good thing to test
But just at 5.0 vcore is only 1.163v on auto under stress not 1.4v and I'm hitting on cpu package 71c
Max vcore is only 1.261v atm
I'll edit and add a screen shot in a minute of my 10900k readings same test.

Posted on Reply
#48
TheoneandonlyMrK
mrthanhnguyen5.5@80 prime95 small fft avx2 here. U sure?
No I haven't got one how would I know , err by asking ?!
Posted on Reply
#49
ThrashZone
theoneandonlymrkNo I haven't got one how would I know , err by asking ?!
Hi,
Indeed you make an outstanding inquiry too for this op
If you notice my cpu-z vcore it shows 1.4v at 5.3 all core same as the op's image lol
Doubt the aida temps would be much different either R20 does hit cpu pretty good R23 too
But yeah you reminded me to even look back at the previous test :cool:
Posted on Reply
#50
qubit
Overclocked quantum bit
That's horrendous. I wonder if it runs anywhere near that hot while doing regular gaming. And it's not even overclocked.

I want something that runs much like my current 2700K, reasonable heat output with air cooling. Sounds like it's worth waiting for Alder Lake in September, which will be the real upgrade.
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