F5F Stay Refreshed Power Users Overclocking Unable to achieve stable overclocking within Windows environment (CPU-Z and core temp).

Unable to achieve stable overclocking within Windows environment (CPU-Z and core temp).

Unable to achieve stable overclocking within Windows environment (CPU-Z and core temp).

I
ihminen123
Junior Member
20
01-30-2026, 04:35 PM
#1
Hi
I'm attempting to overclock my CPU for the first time and have spent considerable time reading this forum and searching online, but I haven't been able to achieve the desired results.
My setup includes:
Motherboard: P67A-GD65 B3
CPU: I7-2600K
CPU cooler: Noctuna NH-C14
Memory: DHX DDR 1600Mhz 8gb
Bios version: 4.3 (latest)
Bios settings page one and two:
Windows settings (Cpu-Z, task manager, hyperpi and core temp):
I've set Windows power management to high performance.
From the BIOS, I adjusted the CPU ratio to 4Ghz, and it appears to function correctly in the BIOS interface (top right corner, 40x100Mhz). However, when I open Windows, I still see the same performance metrics as before—overclocking isn't visible in HyperPi or Geekbench 3, and CPU-Z doesn't reflect any changes, even under full load. The Task Manager shows 4Ghz.
Anyone have a clue what might be going wrong?
I also tried enabling power technology in the BIOS and manually setting the maximum clock per core, but CPU-Z still reported the correct frequency, yet the system remained unstable, even at 3.4Ghz.
I
ihminen123
01-30-2026, 04:35 PM #1

Hi
I'm attempting to overclock my CPU for the first time and have spent considerable time reading this forum and searching online, but I haven't been able to achieve the desired results.
My setup includes:
Motherboard: P67A-GD65 B3
CPU: I7-2600K
CPU cooler: Noctuna NH-C14
Memory: DHX DDR 1600Mhz 8gb
Bios version: 4.3 (latest)
Bios settings page one and two:
Windows settings (Cpu-Z, task manager, hyperpi and core temp):
I've set Windows power management to high performance.
From the BIOS, I adjusted the CPU ratio to 4Ghz, and it appears to function correctly in the BIOS interface (top right corner, 40x100Mhz). However, when I open Windows, I still see the same performance metrics as before—overclocking isn't visible in HyperPi or Geekbench 3, and CPU-Z doesn't reflect any changes, even under full load. The Task Manager shows 4Ghz.
Anyone have a clue what might be going wrong?
I also tried enabling power technology in the BIOS and manually setting the maximum clock per core, but CPU-Z still reported the correct frequency, yet the system remained unstable, even at 3.4Ghz.

V
V_Angel29
Member
187
02-04-2026, 02:11 PM
#2
Have you attempted to reset the CMOS and then perform an OC?
V
V_Angel29
02-04-2026, 02:11 PM #2

Have you attempted to reset the CMOS and then perform an OC?

T
TrueRiven
Member
73
02-15-2026, 08:19 AM
#3
It displays the multiplier settings in the CPU-Z Multiplier pane at the lower left, while many other BIOS options only show the standard base rate and omit your own overclocking values.
T
TrueRiven
02-15-2026, 08:19 AM #3

It displays the multiplier settings in the CPU-Z Multiplier pane at the lower left, while many other BIOS options only show the standard base rate and omit your own overclocking values.

C
CooKonut
Member
196
02-16-2026, 07:16 AM
#4
It states Core speed at 3399Mhz and below results in a multiplier of x34 (16-40). You might assume it reached 40, but it actually caps at 34 even under full load. 😕
C
CooKonut
02-16-2026, 07:16 AM #4

It states Core speed at 3399Mhz and below results in a multiplier of x34 (16-40). You might assume it reached 40, but it actually caps at 34 even under full load. 😕

8
88lucky
Member
67
02-16-2026, 09:55 AM
#5
When displaying 40, activate the multiplier, keep CPU-Z accessible for observation, and install ROG Realbench.
8
88lucky
02-16-2026, 09:55 AM #5

When displaying 40, activate the multiplier, keep CPU-Z accessible for observation, and install ROG Realbench.

X
xGexa
Member
75
02-18-2026, 09:54 AM
#6
If displaying 40 triggers the multiplier, ensure CPU-Z remains open for observation, and install ROG Realbench to monitor it. Performing the ROG Realbench stress test now, and the multiplier reached x34 without increasing further. Realbench detects the CPU at 3399mhz with a multiplier of 34 and a bus speed of 100Mhz.
X
xGexa
02-18-2026, 09:54 AM #6

If displaying 40 triggers the multiplier, ensure CPU-Z remains open for observation, and install ROG Realbench to monitor it. Performing the ROG Realbench stress test now, and the multiplier reached x34 without increasing further. Realbench detects the CPU at 3399mhz with a multiplier of 34 and a bus speed of 100Mhz.

M
master_scope
Posting Freak
794
02-18-2026, 10:23 AM
#7
Do you have the latest BIOS?
M
master_scope
02-18-2026, 10:23 AM #7

Do you have the latest BIOS?

T
TEHPIMMERT
Junior Member
2
02-18-2026, 11:38 AM
#8
Do you possess the most recent BIOS?
Yes, I recently updated my BIOS to version 4.3 a few days back.
T
TEHPIMMERT
02-18-2026, 11:38 AM #8

Do you possess the most recent BIOS?
Yes, I recently updated my BIOS to version 4.3 a few days back.

R
Raires
Junior Member
37
02-18-2026, 12:25 PM
#9
Have you attempted to reset the CMOS and then perform an OC?
R
Raires
02-18-2026, 12:25 PM #9

Have you attempted to reset the CMOS and then perform an OC?