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i5 8600k: sometimes HWinfo shows one core speed drop

pettore84
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Hi,
Sometimes, reading HWinfo64, the speed of one of my CPU core drops below 1 GHz.
My mobo is AORUS H370 Gaming 3 Wifi BIOS F11, CPU i5 8600k, PSU Seasonic focus+ gold 650, GPU 1050ti.
In windows 10 "minimum CPU performance is set to 100%" so i don't think that's related to OS.
I've just updated HWinfo to 6.10 few days go, and this event happened two times since the update (in those sessions just soft gaming and browsing PC use, no heavy loads). 
I don't remember if could've been already happened running HWinfo previous versions, maybe i didn't noticed.
My system works fine, no event errors and my temps are good. My BIOS is in default settings.
Do you think could be a HWinfo software inaccuracy or could it be something to worry about.
Anyway VRM temps don't seem so bad.

 

Here's a pic, thank you very much

fdrop.png

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That's normal behavior, nothing to worry about as it only stays at 800mhz for a fraction of second and when it shifts from usage to idlying.

Personal Desktop":

CPU: Intel Core i7 10700K @5ghz |~| Cooling: bq! Dark Rock Pro 4 |~| MOBO: Gigabyte Z490UD ATX|~| RAM: 16gb DDR4 3333mhzCL16 G.Skill Trident Z |~| GPU: RX 6900XT Sapphire Nitro+ |~| PSU: Corsair TX650M 80Plus Gold |~| Boot:  SSD WD Green M.2 2280 240GB |~| Storage: 1x3TB HDD 7200rpm Seagate Barracuda + SanDisk Ultra 3D 1TB |~| Case: Fractal Design Meshify C Mini |~| Display: Toshiba UL7A 4K/60hz |~| OS: Windows 10 Pro.

Luna, the temporary Desktop:

CPU: AMD R9 7950XT  |~| Cooling: bq! Dark Rock 4 Pro |~| MOBO: Gigabyte Aorus Master |~| RAM: 32G Kingston HyperX |~| GPU: AMD Radeon RX 7900XTX (Reference) |~| PSU: Corsair HX1000 80+ Platinum |~| Windows Boot Drive: 2x 512GB (1TB total) Plextor SATA SSD (RAID0 volume) |~| Linux Boot Drive: 500GB Kingston A2000 |~| Storage: 4TB WD Black HDD |~| Case: Cooler Master Silencio S600 |~| Display 1 (leftmost): Eizo (unknown model) 1920x1080 IPS @ 60Hz|~| Display 2 (center): BenQ ZOWIE XL2540 1920x1080 TN @ 240Hz |~| Display 3 (rightmost): Wacom Cintiq Pro 24 3840x2160 IPS @ 60Hz 10-bit |~| OS: Windows 10 Pro (games / art) + Linux (distro: NixOS; programming and daily driver)
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40 minutes ago, chen57 said:

H chipset board with a k cpu... why...

Because when i bought it (june 2018), i found it new cheaper than 8400 (a flash deal); 8600 wasn't still available. So why not? I'm not interested on OC of course,  but 8600k runs anyway faster than 8400, even at stock freq.

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24 minutes ago, pettore84 said:

Because when i bought it (june 2018), i found it new cheaper than 8400 (a flash deal); 8600 wasn't still available. So why not? I'm not interested on OC of course,  but 8600k runs anyway faster than 8400, even at stock freq.

Lots of people purchase parts with no plans to overclock. My 9900K will likely never be overclocked lol

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All active cores in a Core i5-8600K use the same multiplier and run at the exact same speed.  They are physically locked together.  You cannot have one core running at 800 MHz while the core beside it is running at 4200 MHz.  Ignore that information in HWiNFO.  It does not accurately reflect what speed your CPU cores are running at.

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