[Help] OC i5-2500K

[mrmojorisin17]

Hi all

Someone have tried to OC the CPU with a P8P67 chipset board?

I'm currently run my i5-2500K @4.4GHz (1,264-1,280V) under Windows and it seems to work very well.

But if I boot my SL installation with same parameters on BIOS my CPU runs @3.3GHz.

I'm using 44x multiplier with Turbo Mode on in the BIOS.

My PC's configuration is on my signature.

Any ideas?

[Time2Retire]

Hi all

Someone have tried to OC the CPU with a P8P67 chipset board?

I'm currently run my i5-2500K @4.4GHz (1,264-1,280V) under Windows and it seems to work very well.

But if I boot my SL installation with same parameters on BIOS my CPU runs @3.3GHz.

I'm using 44x multiplier with Turbo Mode on in the BIOS.

My PC's configuration is on my signature.

Any ideas?

Hi,

 

First. Are you sure that your CPU runs at 3.3GHz with OS X? How did you check this? What are your Geekbench / Cinebench scores?

 

I can OC my rig (be it with the i7-2600K, but that shouldn't really matter) and when I do my about this mac dialog still says that the processor is clocked at 3.4GHz (which is the normal frequency for my processor) but this is just because I OC'ed using the per-core turbo multipliers.

 

When I OC with the Asus UEFI auto settings, or change the BCLK setting, then my about this mac dialog changes.

 

Changing the memory frequency with UEFI settings is also picked up.

 

So now the question is how; What did you do to OC your computer? You say to use a 44 multiplier, but what multiplier is that?

 

What values do you get when you enter: sysctl -a in a terminal window? Is that something like this:

hw.busfrequency: 400000000
hw.busfrequency_min: 400000000
hw.busfrequency_max: 400000000
hw.cpufrequency: 3300000000
hw.cpufrequency_min: 3300000000
hw.cpufrequency_max: 3300000000
hw.tbfrequency: 1000000000
...
machdep.tsc.frequency: 3300000000

p.s. This may as well be just another silly bootloader issue!

[mrmojorisin17]

I'm sure that my CPU runs @stock frequency (3,3 GHz) because i get:

hw.cpufrequency: 3310000000

with sysctl -a and also because my Geekbench score is the same.

I have to disable Speedstep from BIOS to get correct OC'ed CPU @4,4 GHz.