Stability

[Rigi]

Alright so i got my I5 2500k to 4.5ghz with 1.35v highest temp is 65C (the hottest core)

i got Asus Maximus IV Extreme (all i changed was multiplier and Volts) everything else is on auto

Gskill 1.5v 1600 (not overclocked)

ive been running Prime 95 for 8 hours, is that long enough for stability, how long do you all usually run yours for?

 

[Grizzly]

Prime stresses the CPU more than many other practical programs will so if it's fine after 8 hours it's stable enough, you can always do SMP folding for up to 24 hours to be certain. Look to the Redline Folding section for help on that.

 

[SieB]

8hrs is enough but you could try 24hrs if you wanted.

With your OC you could probably drop the voltage to 1.32 - 1.325v on the Maximus for 4.5ghz also if you haven't done already disable speedstep and turbo boost so you have a constant 4.5ghz clock it will also help with stability.

 

[Rigi]

8hrs is enough but you could try 24hrs if you wanted.

With your OC you could probably drop the voltage to 1.32 - 1.325v on the Maximus for 4.5ghz also if you haven't done already disable speedstep and turbo boost so you have a constant 4.5ghz clock it will also help with stability.

Speed step is disabled, i didnt get a "Good" Chip, Fails at 1.34 after like 3 hours. ive been gradually tunning it so far 1.35v is the only one who has hit the 8 hour mark

 

[SieB]

Speed step is disabled, i didnt get a "Good" Chip, Fails at 1.34 after like 3 hours. ive been gradually tunning it so far 1.35v is the only one who has hit the 8 hour mark

Shame, I have read on other forums people getting 4.5 with as little as 1.32v it does depend on the silicon lottery though.

A couple of settings that might help with stability are setting Load Line Calibration to Ultra high and Phase and Duty Control to Extreme. If you do set these you will need to lower the voltage a bit because it will cause it to go a bit higher than what you set it to in the BIOS during load.

If you have it stable at 1.35v though it's not worth going through the whole testing phase again if you are happy with it.

 

[Rigi]

Shame, I have read on other forums people getting 4.5 with as little as 1.32v it does depend on the silicon lottery though.

A couple of settings that might help with stability are setting Load Line Calibration to Ultra high and Phase and Duty Control to Extreme. If you do set these you will need to lower the voltage a bit because it will cause it to go a bit higher than what you set it to in the BIOS during load.

If you have it stable at 1.35v though it's not worth going through the whole testing phse if you are happy with it though.

might just try it in the next couple of Nights, 1.35v is good

if i can go down to 1.34 that would be great thx

this is my first Ever Build. all my life ive had HP, lol Gaming on a 5 year old HP Sucks.