Intel Core i9 11900K Reportedly Runs Hot At 98℃ When Stress Tested On AIDA64 - PC SEEKERS

Intel Core i9 11900K Reportedly Runs Hot At 98℃ When Stress Tested On AIDA64

Intel is expected to launch their 11th gen Rocket Lake-S desktop CPUs to the market some time between mid to end of March but before that happens, as with every CPU or GPU launch, we now have leaks of the Intel Core i9-11900KF CPU specifications, performance numbers and even how hot the CPU can get when under load. Today's leak comes from Chiphell Forum where a user shared screenshots of the AIDA64 stress test running on an Intel Core i9 11900KF processor.
Source: Chiphell (Via: @9550pro)
The above screenshot shows a 11th gen, yet to be released, Intel Core i9 11900KF running on an ASRock Z590 Steel Legend WiFi 6E board and is paired with DDR4-3600MHz RAM. After a 30min AIDA64 FPU Stress test the Core i9 11900KF was running at about 98℃. The point to be noted here is that the CPU is only a 8 Core 16 Thread CPU (and not a monstrous 16 Core 32 Thread part) and was being cooled with a 'Entry 360 AIO' - as claimed by the user on Chiphell who shared the screenshot.
The Core i9 11900KF is a 125W CPU (125W is the PL1 limit of the CPU) but the screenshot shows that the i9 11900KF was pulling just above 250W, at 250.8W, which is the PL2 limit of the CPU. An Intel CPU if it has the thermal and power headroom, the CPU will boost to higher clocks while drawing 250W or the power defined in the PL2 limit for 56 Seconds, which is the stock configuration from Intel and is how the CPU is normally expected to behave out of the box.

The CPU boosted to 4.8GHz or 4788MHz while drawing 250W of power during the 30 minute long stress test. So it is clear that is not the stock settings that the CPU was running in, instead the user who ran the stress test made required changes in the motherboard BIOS to modify or disable the PL1 and PL2 limits of the CPU. Though the CPU voltage is displayed as 1.401V on the screenshot, the user over at Chipehell forum has pointed out that that reading is wrong and HWinfo displayed the voltage at 1.325V.

It is to be noted here that the 1.325V for a 4.8GHz all core boost is still a lot higher than expected and points towards a poorly optimized BIOS. Also the fact that the CPU got as hot as upto 98℃ even on a 360 AIO cooler points again towards either a poorly optimized BIOS or a bad contact between the CPU and the AIO or that the CPU IHS might be too crooked.
We do not exactly know what settings were changed in the BIOS or if the BIOS is even ready for day to day to use yet also it can be a one off CPU with a bad IHS that made the CPU to heat up to 98℃ or bad silicon that required such high voltages just to boost to 4.8GHz. So we cannot confirm yet if this is how all Intel 11th gen Core i9 CPUs are going to behave or if there was a fault in the user's setup or if the CPU was a one-off with a bad silicon or bad IHS. Guess we all still have to wait for the independent reviews to know for sure.
The fact that Intel is only going to offer 8 Core 16 Thread parts as part of it's Core i9s in its 11th gen CPU line up does not help in explaining why the CPU could reach such high temperatures.
It is also to be noted that the temperatures reached were during a stress test and the real world performance / stats like say Gaming or Streaming will be different and will definitely be easier on the CPU instead on being taxing on it which is what is meant to happen when you are stress testing or benchmarking CPUs.
Coming to the specifications of the Intel Core i9 11900KF is a 8 core 16 thread CPU and as the K moniker suggests - is an unlocked part for overclocking and thus has a TDP / PL1 limit of 125W and the F moniker indicates the iGPU is disabled. The base clock of the CPU is reportedly 3.8GHz and the single core boost clock can reach as high as 5.3GHz with the help of TVB (Thermal Velocity Boost) and can boost to 4.8GHz all core with the help of TVB.
What do you think might be the reason behind such high voltages and temperatures? Do let us know down in the comments section below.

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