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i5-4670k OC Problem

post #1 of 7
Thread Starter 
Hello to everybody and sorry if my english will not be very good.
I'm trying to overclock my new pc with a i5-4670k on a GA-z87x-d3h, I just want to reach a light OC (4.2/4.3GHz). I set the BIOS as you can see in the attached images below, the temperatures are fine, the system seems stable but I have a huge problem: the frequency is stuck at 3600Mhz!
I really can't explain it, as you can see the turbo is disabled, all the power saving states and downclock features are disabled, the bclk is 100MHz, the Gear Ratio is x1.0 and the cpu multiplier is x42.
Anyone who can help me to overclock and figure out what's happening?
Really thanks to everybody!







post #2 of 7
Why not turn on Turbo Boost and adjust your turbo multipliers higher?

Some motherboard bios options are misleading. Intel CPUs need Turbo Boost enabled within the CPU to access any multiplier higher than the default multiplier. It looks like you are being held back by the turbo limit when 4 cores are active so you need to adjust that higher. Enable Turbo Boost and set the 1, 2, 3 and 4 core limits to 42 across the board. I would also enable EIST.
post #3 of 7
Turbo does not NEED to be enabled to clock above stock multiplier, as stated above. However, in your particular case, having Turbo enabled without setting 4-core turbo multiplier to your desired clock is what's limiting you to 3.9Ghz.
post #4 of 7
Quote:
Originally Posted by adamlee05 View Post

Turbo does not NEED to be enabled to clock above stock multiplier, as stated above. However, in your particular case, having Turbo enabled without setting 4-core turbo multiplier to your desired clock is what's limiting you to 3.9Ghz.

Except he has Turbo disabled.

Re-enable turbo and see if that fixes your problem. You can either use the individual turbo settings on the advanced page, or you can use the core multiplier (as you did) on the main page. They both do the same thing on Gigabyte boards.
post #5 of 7
Thread Starter 
Thank you very much but neither with the turbo I was able to clock higher then 3600mhz. I updated the BIOS to the latest version (the F7) and now everything seems to work.
For now I set:
BCLK 100.1Mhz
Gear Ratio 1.0x
VRIN 1.8v
VCore 1.23v
RING Voltage 1.17v
CPU multiplier 42x
UNCORE multiplier 38x
Turbo Auto
C1E, C3, C6/C7, EIST Disabled

I read your suggestions so I'll enable EIST
With the settings above the system is stable, but I can't lower any voltage or I get BSOD. Do you think the voltages are normal or a bit high for 4200mhz?
The turbo is set on auto but the frequency is always at 4200mhz, never goes up on any core, is it normal?
Thanks again to everybody smile.gif
post #6 of 7
For the voltage, every chip is different and will need different volts. If you try to lower the volts and it crashes, then you jus thave a chip that needs more than average volts at that speed. You could try lowering your uncore and see if that helps let you lower the Vcore a little.

If you want the chip to downclock and downvolt you'll need to enable EIST and C1E (and you may as well enable C3 and C6/7 as well, no reason not to), and set the Windows power plan to Balanced.
post #7 of 7
Thread Starter 
Thank you very much Forceman, I will keep the voltages I found stable and I'll enable all the settings you suggested
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