CPU not reaching boost clock speed.

[Karnage219]

I am having a bit of trouble getting my CPU to clock to a higher speed. CPU-Z shows a multiplier range of 8-39 but the CPU only seems to hit 3.6Ghz. On top of this issue I have enabled EZ OC in the BIOS that should OC the CPU to 4.2Ghz, but that does not seem to be happening.

I have successfully overclocked to 4.5Ghz in the past, and have had the EZ OC option boost to 4.2Ghz without any issue until now.

 

The temps don't seem to be the issue, as they never reach above 55C after running Prime95 for an extended period.

 

CPU: Intel i5 6600K 3.5Ghz

Mobo: asrock z170 pro4

OS: Windows 8.1

[Wolly9102]

Is the powerplan set to ''energy saving''? 

[Karnage219]

2 minutes ago, Arjan W said:

Is the powerplan set to ''energy saving''? 

Nope, High performance.

[Wolly9102]

1 minute ago, Karnage219 said:

Nope, High performance.

Anything special happend? Did you update the bios or something in the mean while?

[Karnage219]

I have re-installed the OS between the last time I overclocked and now, but no bios or firmware changes.

[Wolly9102]

1 minute ago, Karnage219 said:

I have re-installed the OS between the last time I overclocked and now, but no bios or firmware changes.

try to reset the CMOS. It could help.

[Karnage219]

11 minutes ago, Arjan W said:

try to reset the CMOS. It could help.

Ill give that a shot tomorrow.

[Guest]

The 3.6Ghz is the normal 4 core turbo speed for a 6600k, it doesn't seem to be overclocked at all right now. On stock settings it should only reach 3.9Ghz in single core.

[Karnage219]

38 minutes ago, Medicate said:

The 3.6Ghz is the normal 4 core turbo speed for a 6600k, it doesn't seem to be overclocked at all right now. On stock settings it should only reach 3.9Ghz in single core.

I tested using Prime95 on all cores, and single core with the same result of never passing 3.6Ghz. I seem to have gotten around the problem by installing asrock A-Tuning and changing the CPU Ratio under the OC tab in the program. Im not sure why this didn't work in the bios. I will still try resetting the cmos tomorrow.