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

#1
BArms
Weren'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!
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#2
dirtyferret
perfect, its going to be a low of 9f here the next day and I could use a spare heater
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#3
thesmokingman
The next question would be if the IHS is soldered?
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#4
theonek
aww. and it is an 8/16 chip. downgrade from 10th gen....
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#5
Verpal
Chiphell love shitting on Intel, I found it difficult to believe 2 less core on slightly improved node will result in these dramatic temperature increase in comparison with Rocket lake.
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#6
ThrashZone
Hi,
Said it before this forum needs a Rumors section :-)
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#8
Atlasz
Does it come with a delid kit? xD
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#9
londiste
Only 250W? What AIO is that?
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#10
Dave65
Of course it does yet people will still buy it :shadedshu:
Verpal
Chiphell love shitting on Intel, I found it difficult to believe 2 less core on slightly improved node will result in these dramatic temperature increase in comparison with Rocket lake.
So do I!
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#11
Vya Domus
I have to wonder how the hell is this even possible. They are still on 14nm which means the lower transistor density makes the chips much easier to cool compared to an equivalent chip on say TSMC's 7nm. So how is it possible that with this much cooling it can get so hot ? Is the IHS and solder this catastrophically bad ?
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#12
ThrashZone
Hi,
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.
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#13
KarymidoN
98ºC and 250W of CPU power draw.
my entire computer (4 HD's 1SSD, gtx 1070 (4 displays at the same time), ryzen 7 3700x and 10 rgb fans) pulls 350W (total) under full load. Intel bout to ruin the green new deal all by themselves.
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#14
Prima.Vera
DOA CPU is DOA.
Probably the most embarrassing release of Intel ever...
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#15
KarymidoN
Verpal
Chiphell love shitting on Intel, I found it difficult to believe 2 less core on slightly improved node will result in these dramatic temperature increase in comparison with Rocket lake.
they probab squeezing the hell out of that chip to beat amd in single core/perf... 125W TDP and 250W power draw...
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#16
londiste
KarymidoN
they probab squeezing the hell out of that chip to beat amd in single core/perf... 125W TDP and 250W power draw...
This has nothing to do with single core perf. All about multi-core.
Other than power efficiency, 11900K at 4.8GHz should be plenty competitive with Zen3.
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#17
R0H1T
Hey at least it doesn't take off or end up in flames, like it's namesake :slap:

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#18
B-Real
98C? I bring the eggs.
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#20
Sihastru
1.4V... no way this is the voltage required to get to all core 4.8GHz for this CPU. 5.4GHz all core is just around 1.35V for a 10-core. Try again.
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#22
Fouquin
Mmmmm, smells like FUD.

Also did everyone just forget that modern chips run right up under their thermal limit to achieve a longer more stable boost duration, simply because the title says Intel? If the chip has thermal management to sustain 98C indefinitely so that performance doesn't just fall off a cliff at 120 seconds or so, that's slightly impressive.
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#23
Wirko
thesmokingman
The next question would be if the IHS is soldered?
If it is, you'll be able to desolder it using nothing else but Prime95.
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#24
Lightofhonor
Wirko
If it is, you'll be able to desolder it using nothing else but Prime95.
:roll:
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#25
ZoneDymo
thesmokingman
The next question would be if the IHS is soldered?
omg dont, imagine if this is again that crappy paste job....omg no
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