2600k won't go above 4ghz on prime95?

[amuffin]

Well I just switched over to an asrock z68 extreme 4 gen 3 board and I have everything setup for a good oc which is 45x multi, however when I run prime i see it only go up to 4ghz where as other applications it goes up to 4.5ghz. Am I missing something? Probably something I missed in the bios, then again it is pretty hard to oc with the asrock bios....

 

[mcnumpty23]

as you say its not a good bios for overclocking at all--maybe a bios update when it comes out will help

only advice i would offer is run the memory at 1333mhz

read somewhere that it hates 1600mhz or higher when overclocking

 

[amuffin]

I see...and the weird thing is I have turbo boost off and the frequency cycles from 4ghz-4.4ghz :/

 

[PMentior]

Did you adjust the TurboBoost power draw (not sure what the setting is accually called im kinda going from memory of setting up a friends overclock). It will be a setting measured in Watts. If its set too low the chip will adjust its clock speed to stay under this limit.

 

[amuffin]

Did you adjust the TurboBoost power draw (not sure what the setting is accually called im kinda going from memory of setting up a friends overclock). It will be a setting measured in Watts. If its set too low the chip will adjust its clock speed to stay under this limit.

I see, so on asrock boards it is based on this?

 

[amuffin]

what are the temps.?

50-58C on full load pretty low if you ask me

 

[amuffin]

you have been having a few problems with this set-up huh.?
you think it might be a buggy board.?

Their bios is just a little screwy I can't even update it, well hopes to fix the bugginess...

 

[omega21xx]

It's as Pmentior says, you must enable turbo, change the power limit under turbo (i set mine to 300 not that it will ever need to put 300 through), and then you can disable turbo and be on your way with overclocking, messed up BIOS but otherwise a nice board
If you need help with the ASRock z68 i have the extreme 3 so I can help if you run into any weird bios issues.

 

[amuffin]

I see, i'll try 250 and i will report back

 

[omega21xx]

I see, i'll try 250 and i will report back

You should be fine with 150 but i just set it to the extreme to avoid any issues lol If i remember correctly ASRock has it at 100 by default.

 

[amuffin]

150 on my board, dang I can't boot with 1.27 and 4.5ghz however I'll stick with 4ghz on this one with 300 for turbo. Any other suggestions?

 

[omega21xx]

150 on my board, dang I can't boot with 1.27 and 4.5ghz however I'll stick with 4ghz on this one with 300 for turbo. Any other suggestions?

I use 1.3 to get 4.5ghz stable, my chip is on the hungry side of i5's. The i7 uses a bit more power than the i5 so maybe you need a bit more voltage? oh and the llc on these boards are a little weird so you'll need to do a lot of playing to get the best results. You may get 1.27 bootable or stable with llc level 1.

 

[amuffin]

Best answer selected by amuffin.

 

[jimmysmitty]

I use 1.3 to get 4.5ghz stable, my chip is on the hungry side of i5's. The i7 uses a bit more power than the i5 so maybe you need a bit more voltage? oh and the llc on these boards are a little weird so you'll need to do a lot of playing to get the best results. You may get 1.27 bootable or stable with llc level 1.

1.30 is not actually bad at all. Most 2500Ks need 1.325-1.35v for a stable 4.5GHz OC. I also am running 4.5GHz and using 1.30v but I am using Offset mode so it lowers when idle.

Normally the best for offset is auto with a - 0.05v and that normally puts it at 1.3v for load and .968v for load.