Question CPU Drops frequency to 4700 out of the blue . Even though it should be locked to 5.0ghz minus 1

Jan 9, 2021
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While gaming on 9900k 2080trio at around 150fps COD Warzone. My system randomly crashed to 30 fps and my CPU frequency dropped to 4700MHz .
I've tested my cpu on OCCT before gaming and got no issues. It held 4900 or 5000 MHz while under stress test. What can i do to test for issues?
 

Zerk2012

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While gaming on 9900k 2080trio at around 150fps COD Warzone. My system randomly crashed to 30 fps and my CPU frequency dropped to 4700MHz .
I've tested my cpu on OCCT before gaming and got no issues. It held 4900 or 5000 MHz while under stress test. What can i do to test for issues?
9900K has a all core turbo speed of 4.7 so not sure what your saying.

[Modify Frequency Info]
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ModeBaseTurbo Frequency/Active Cores
Normal3,600 MHz5,000 MHz5,000 MHz4,900 MHz4,800 MHz4,800 MHz4,700 MHz4,700 MHz4,700 MHz
 
Jan 9, 2021
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full system spec? include make and model of the psu
what the cpu/gpu temp and usage during the game?
Intel Core i9-9900K 3.6 GHz 8-Core Processor

-NZXT Kraken X72 Liquid CPU Cooler

-Asus ROG MAXIMUS XI HERO (WI-FI) ATX LGA1151 Motherboard

-Corsair Vengeance RGB Pro 32 GB (4 x 8 GB) DDR4-3200 CL16 Memory

-Corsair MP510 1.92 TB M.2-2280 NVME Solid State Drive

-Seagate Barracuda 2 TB 3.5" 7200RPM Internal Hard Drive

-MSI GeForce RTX 2080 8 GB GAMING X TRIO Video Card

-Lian Li PC-O11 Dynamic ATX Full Tower Case

-EVGA G3 750 W 80+ Gold Certified Fully Modular ATX Power Supply

Temps while running on both
CPU --47C
GPU -- 68C
I've also found that resetting and not gaming returns it to the original clock speed of 5.0
Additionally after it drops frames and I close out the game it returns to 4700MHz.
But after a while it transitions to 800MHz .... FML


The Frequency for my CPU is only at 3600MHz Even though I've always ran it on 5.0 MHz Per
View: https://youtu.be/bM5XO96b4G0
 
Last edited:
Jan 21, 2021
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While gaming on 9900k 2080trio at around 150fps COD Warzone. My system randomly crashed to 30 fps and my CPU frequency dropped to 4700MHz .
I've tested my cpu on OCCT before gaming and got no issues. It held 4900 or 5000 MHz while under stress test. What can i do to test for issues?
Are you sure you tested it all core at 5 ghz, because the 9900K is not able to reach 5 ghz all core out of the box and you shouldn't do that. It has a 4 core boost of 4.8 ghz, and an all core boost of 4.6. This is true for basically all processors, the single core boost will be higher than the all core boost. Maybe you only benchmarked single core at 5 ghz, in which case it would be fine. While gaming, you are most likely using multiple cores so the CPU is having a stroke trying to do what you told it which violates it's boosting instructions
 
Jan 9, 2021
3
0
10
0
Are you sure you tested it all core at 5 ghz, because the 9900K is not able to reach 5 ghz all core out of the box and you shouldn't do that. It has a 4 core boost of 4.8 ghz, and an all core boost of 4.6. This is true for basically all processors, the single core boost will be higher than the all core boost. Maybe you only benchmarked single core at 5 ghz, in which case it would be fine. While gaming, you are most likely using multiple cores so the CPU is having a stroke trying to do what you told it which violates it's boosting instructions
View: https://youtu.be/bM5XO96b4G0
 
the 9900K should 'only' hit 4.7 GHz under all- core loadings, barring use of MCE or manual entry of multipliers, or tinkering within Intel's XTU (the 9700K was 4600 MHz all core...)

(AVX workloads might also induce multiplier reduction by a 100-300 MHz if AVX offset set to do so...)
Additionally, all power limits would need to be removed to sustain 5 GHz, assuming temps are under control and no VRM throttling is occurring...
 

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