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CPU not running at the ratio I set it to.

B

b34rhunt3r

Junior Member
I have been overclocking an i5-2500k and under load, the ratio drops from 44x to 40x or lower. I have disabled speedstep as well as c states. Any ideas?
 
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RampantAndroid said:
Did you do anything with vdroop? What is your bclk? How did you OC - raise the cpu multiplier, or the turbo multiplier?
Click to expand...

llc is at "level 2" in the asrock bios, second highest setting I assume it's 75%

bclk is 100

cpu ratio was raised, turbo is disabled

I really have no idea why the ratio would drop if turbo and speedstep are disabled =/ even if the voltage were dropping, wouldn't it just cause instability?
 
b34rhunt3r said:
llc is at "level 2" in the asrock bios, second highest setting I assume it's 75%

bclk is 100

cpu ratio was raised, turbo is disabled

I really have no idea why the ratio would drop if turbo and speedstep are disabled =/ even if the voltage were dropping, wouldn't it just cause instability?
Click to expand...

Sorry, should have been clearer- use coretemp to look at bclk while under stress. It could be dropping.

Else, the CPU might be throttling. What are your temps?
 
LOLOLOL 😀😀😀

Make sure TURBO is enabled, you can't overclock without turbo.

If you want a static frequency, you can only turn off speedstep. But turbo has to stay on. 😀😀
 
borisvodofsky said:
LOLOLOL 😀😀😀

Make sure TURBO is enabled, you can't overclock without turbo.

If you want a static frequency, you can only turn off speedstep. But turbo has to stay on. 😀😀
Click to expand...
um I am pretty sure I turned off turbo and raised the multiplier before to oc.
 
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Could it be throttling due to power draw and not temps? Perhaps hitting a predefined tdp limit set in the board?
 
My asrock z68 extreme3 was doing this with my 2700k until i changed the Power Draw limit I believe in CPU voltage setting. It defaulted to 100 but i changed it to 200 after searching and seeing similar problems. I saw no more problems with overclocking after that.
 
MarkLuvsCS said:
My asrock z68 extreme3 was doing this with my 2700k until i changed the Power Draw limit I believe in CPU voltage setting. It defaulted to 100 but i changed it to 200 after searching and seeing similar problems. I saw no more problems with overclocking after that.
Click to expand...

Oh, right - I forgot about that. There's also a time limit on it right? Or is that only turbo?
 
MarkLuvsCS said:
My asrock z68 extreme3 was doing this with my 2700k until i changed the Power Draw limit I believe in CPU voltage setting. It defaulted to 100 but i changed it to 200 after searching and seeing similar problems. I saw no more problems with overclocking after that.
Click to expand...


The default limit was 150 on my board(z68 pro-3m) so I set it to 200 first and then to 300. Both times the ratio would stay at 44 for about a minute and then drop to 35.
 
When I ran my 2500k@4900-5100Mhz with intel burn at 1.42-148v the cpu would start throttling at 86c.
I lowered the temps to solve the throttling problem.
 
b34rhunt3r said:
The default limit was 150 on my board(z68 pro-3m) so I set it to 200 first and then to 300. Both times the ratio would stay at 44 for about a minute and then drop to 35.
Click to expand...

Try the ratio at 40 and see if it still drops 🙂

Sounds like either a power draw limit, or throttling.
 
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