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Cpu running at OC speed - but I didn’t OC it yet!

Joined
Apr 9, 2020
Messages
55
Motherboard
Gigibyte Designare Z390
CPU
Intel i9-9900K
Graphics
Radeon Nitro+ RX 5700 XT 8GB
Mac
  1. MacBook Pro
Mobile Phone
  1. iOS
ok I’m up and running - nice and stable - so I’m getting ready to try OC i9-9900k designare Z390 I set memory to XMP 1 and left rest of bios to recommendation of this site.
did base testing before OC and intel app shows it running 4.9 - 5.0 At 98 - 99% while doing cinebench and 3D rendering in Houdini. Running latest Catalina.
Checked bios and it say cpu running 4.8
What am I missing here.
Can this be correct?
 

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Last edited:
Joined
May 17, 2017
Messages
3
Motherboard
Gigabyte Z390M Gaming
CPU
i9-9900KS
Graphics
RX 5700 XT
Mac
  1. MacBook Pro
Mobile Phone
  1. iOS
This is just turbo boost. The 9900k will boost its speed to 5 GHz on up to 2 cores, I believe, and 4.7 GHz for all cores. Turbo boost is limited by available cooling, power, and is officially also time limited. After a certain time period, the boost will scale back to keep the CPU within its official TDP figure. Many overclocking motherboards will ship with a default BIOS that is set to ignore those time limits, effectively overclocking the CPU out of the gate using the turbo boost behaviour.
 
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