i5 2500k General Overclocking Help

Following on from this thread:

http://forums.overclockers.co.uk/showthread.php?t=18591438

I have my i5 overclocked to 4GHz just by upping the multiplier, I have high temps and voltage because of this and would like to sort that out to either lower the temps, or raise the overclock further without increasing the temps... Or a combination of the two

Which setting would I need to change for the voltage to take it off auto, and onto 1.25 as a test... I assume I use the CPU voltage offset mode to get to 1.25 (or as close as possible)? Just wanted to check





Ignore the figure shown in the pic, the voltage is actually at 1.3 while I'm just browsing and typing this, from CPU-Z

Thanks!

(Progress with this will be slow as I am quite busy, will be an on going task of improving my overclock as and when I have time)

Firstly mate, set your ram speed according to their xmp profile. Should just be able to select that by choosing memory frequency. Once you have done that, make sure the offset sign is + and set the offset to 0.1 and boot it. Check voltages in hw monitor under load and adjust in bios from there. If it won't boot, up it a bit at a time until it will

Thanks phate I'll do that... Haven't forgotten about this, just busy haha

Hi all/phate

I've now started to tweak this finally, only just got round to upgrading the TIM

Put the multiplier back to 40, and to get to the ~1.25v under load, I had to set the offset sign to '-' but that means that at idle, 1.6GHz, I am only at 0.904v... Is that any issue or causing any harm to the processor?

When you said 1.25v, should that be 1.25v at load when running at 4GHz, or when idling at the 1.6GHz (with speedstep)

Hope someone can help

Thanks

Also, to add to the above, the core speed doesn't seem to match/relate to the current multiplier? I've never seen that before, I also don't understand where the 16 - 59 multiplier has come from as it is set on 40, and doesn't go higher than that when doing something intensive

Anyone got any ideas as to what is happening and if I've misconfigured something?

azibux1 said:

Also, to add to the above, the core speed doesn't seem to match/relate to the current multiplier? I've never seen that before, I also don't understand where the 16 - 59 multiplier has come from as it is set on 40, and doesn't go higher than that when doing something intensive

Anyone got any ideas as to what is happening and if I've misconfigured something?

Click to expand...

Something is really not right there your bus speed should be around 100 MHz, this times your multiplier should give your speed.

my i5 2500ks bus speed is 100 and my multiplier is 45 so my core speed is 4.5Ghz.

Might be worth clearing your CMOS and starting again there are plenty of youtube videos for overclocking on an asus mobo

i.e
https://www.youtube.com/watch?v=UlRw-1V6-Yk

You should be able to just set the voltage by typing what you want into the box where it says voltage, if it wont let you, then turn off the ai tuner option in the BIOS, which should allow you to set everything manually, it's never a good idea to allow your mobo to set the voltage as when you start to overclock it goes bloody mental.

The 16x multiplier is some form of power saving, when the CPU is idle it will set its self to that if you have smart tune (iirc) enabled, it should only do it when you are literally doing nothing and as soon as you do something it will kick back up to full speed, however you bus speed is well off for some reason and as pdhenin says it should be 100 Mhz.

To give you an example my 2500k would hit 4.0Ghz at a voltage of 1.125 and be stable, and i'm at 1.3v and 4.6Ghz stable (ish, need to do some more tweaking and testing).

But i'd say for a start get into the BIOS and load optimised defaults, boot into windows and have a look at cpu-z and see what it says, then begin the process from there.

This is a good video to watch for general pointers etc,

https://www.youtube.com/watch?v=mBEeXajbG2o

Thanks for the tips guys

I understand the bus speed was somehow messed up, I've reloaded defaults in the BIOS and re-set the multiplier to 40, bus speed is now correct and the multiplier goes up and down based on load like it should because of speedstep / power management

I will watch the videos you've linked to and try and get a good voltage level. And thanks for the figures Spud, I'll bear them in mind when doing mine as a brief guideline

Thanks all