Another 2500k post :)

MK2012 · 10 Apr 2012 at 12:12

Sorry yes LLC is set Ultra

i meant CPU PLL over voltage is auto i believe .

TwsT · 10 Apr 2012 at 12:18

Ultra is fine you will find it boosts the vcore on extreme.

PLL over voltage will be fine on auto I think. As I said 1.328 is fine OC voltage for a 2500K just stability test it for a few hours to make sure and you're all set.

MK2012 · 10 Apr 2012 at 12:23

OK, got my dissertation to finish for uni atm. But after that i'm gonna intel burn this CPU

Many thanks

PiKe · 10 Apr 2012 at 12:28

Out of curiosity if a CPU asks for a given voltage at a certain frequency, can this change as the CPU ages?

Justintime · 10 Apr 2012 at 13:50

Wouldn't think so, afaik its pre-programmed at the factory.

PiKe · 10 Apr 2012 at 14:20

Justintime said:
Wouldn't think so, afaik its pre-programmed at the factory.

Can you not just set your own voltage like old style overclocking?

Justintime · 10 Apr 2012 at 14:46

Of course. The best way however is offset so when it clocks down on speedstep it also incrementally reduces the voltage, saves wear and tear on the cpu and also heat production. Say your VID at 46x was 1.25v and this was set to an offset of +.05v at 46x (4600MHz) thus having a vcore of 1.3v at 4600MHz, when it clocks to 1600MHz on idle, say the VID was 1.000v, it'll be 1.05v instead, still a lot less.

PiKe · 10 Apr 2012 at 14:48

Interesting, I would have thought speedstep would be disabled for stability.

Justintime · 10 Apr 2012 at 14:52

PiKe said:
Interesting, I would have thought speedstep would be disabled for stability.

Dosen't make much of a diff now. Earlier bioses seemed to have niggles with it but all seems smoothed out now.

PaulyD · 10 Apr 2012 at 15:06

Can get BSOD's on idle when its fine underload, just need to play with the voltages and get the balance right

PiKe · 10 Apr 2012 at 15:06

One more question, how do you know if they CPU is going to request a ridiculous voltage at say 4.5ghz? Do you just have to go up a bit at a time and into bios to avoid this eventuality?

PaulyD · 10 Apr 2012 at 15:46

I read a post on another forum somewhere that said about upping the ratio to 42 and then booting the board so it would set the VID to something nearer what you are aiming for, then from that going upto 45.

So yeah, pretty much what you said

Justintime · 10 Apr 2012 at 15:47

PiKe said:
One more question, how do you know if they CPU is going to request a ridiculous voltage at say 4.5ghz? Do you just have to go up a bit at a time and into bios to avoid this eventuality?

If left on auto, you'll see how much. You can use coretemp or cpu-z etc... to find out the present voltage.

Justintime · 10 Apr 2012 at 15:48

PaulyD said:
Can get BSOD's on idle when its fine underload, just need to play with the voltages and get the balance right

Much to do with the LLC settings, too high and it can droop too much under idle. i tend not to use max LLC because of this.

PiKe · 10 Apr 2012 at 15:50

Justintime said:
If left on auto, you'll see how much. You can use coretemp or cpu-z etc... to find out the present voltage.

But potentially the damage could be done by then if you boot at 45x multi and it's pumping 1.5v through the chip? I haven't tried it myself yet, I just want to be clear before I do.

Justintime · 10 Apr 2012 at 15:51

Possibly, but i doubt such a short term increase would do any damage. Also haven't met any chips that req. over 1.45v for 4.5-4.6GHz.

MK2012 · 11 Apr 2012 at 22:26

PiKe said:
But potentially the damage could be done by then if you boot at 45x multi and it's pumping 1.5v through the chip? I haven't tried it myself yet, I just want to be clear before I do.

You wont need anywhere near that much mate, im currently on 4.5ghz on 1.328 as i was BSOD - 1E Code all the time >.< still playing with it but at 1.328 is giving me 32-40 max on idle and never really over 60 full whack really, but i have got a massive cooler >.<

IvanDobskey · 12 Apr 2012 at 09:28

You will eventually kill your CPU with that voltage, it just might take a bit of time. If you want to keep that CPU for any length of time then keep it under 1.4v