Is the CPU speed lower than the BIOS configuration when running at full load in Windows 10?

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jmk_0605
Member

65

05-04-2016, 04:02 PM

#1

I own a 4690k on a Gigabyte motherboard that I overclocked to 4.2Ghz.
I just switched to Windows 10.
Recently, I observed my CPU was only operating at 1.8Ghz under full load.
Not overheating detected, and the power supply seems fine.
I spent time adjusting Windows power settings and BIOS, but I can't achieve overclocking or turbo mode.
The only stable setting is a constant 3.5GHz in Windows Performance mode, with all C states turned off in BIOS.
With C states active, performance drops as the CPU workload increases.
It worked well in Windows 7.
Has anyone experienced this issue before?

S

Supr3matt
Member

73

05-06-2016, 10:47 AM

#2

i5 4690k running at 4.2Ghz with a stock cooler from Gigabyte H81
H-Boards are typically for non-K CPUs and aren't designed for overclocking, which could explain the situation.
For unlocked CPUs, Z-Boards work well; any Z97 board will suffice.

L

Llyodsk
Member

164

05-06-2016, 02:29 PM

#3

i5 4690k running at 4.2Ghz with a stock cooler from Gigabyte H81
H-Boards are typically for non-K CPUs and aren't designed for overclocking, which could explain the situation.
For unlocked CPUs, Z-Boards work well; any Z97 board will suffice.

L

Lior1001
Member

143

05-07-2016, 09:37 AM

#4

migronesien :
"i5 4690k at 4.2Ghz with stock cooler on Gigabyte H81"
H-Boards of usually for non-K CPUs so not made for overclocking that might be the reason.
You use Z-Boards for unlocked CPUs. Any Z97 board will do the job.
It ran OK on windows 7

E

epic_person2
Member

79

05-26-2016, 01:49 AM

#5

It might be worth revisiting Windows 7.