Originally Posted by cba1986
@Akehage Thanks for answering.
@Falkentyne How is possible for some people to have suchs overclock at such lower voltages?
In my case i have to use 1.35 to have my 4.5 stabe with HT on. I now that disabling Ht allow to lower the voltage at the same frequency.
In realtemp the VID for my chip at 4.5 is 1.3511 the same with 4.6.
What are your settings?
It depends on the default VID of the chip, with some variances.
Lower VID cpu's run hotter and respond better to volts (meaning they run on lower vcore).
Usually the indicator is the default VID at 3.4 ghz, not at 4.5 or higher speeds. Lower VID the better. However this isnt a firm rule, and an even better rule is the higher the multiplier / mhz that the chip will work at with PLL overvoltage disabled, the better clocker it will be, regardless of VID (I could be wrong).
I'm not using that chip but all I remember is, for the better of the two chips, default VID at 3.4 ghz was 1.215v and at 5 ghz was 1.3711v. I'm using the higher vid one that needs a lot more volts. Not gonna swap just to check the vid at 4.5 ghz...
What is your vcore at full load at 4.5 ghz, though? Not the bios setting.
Cuz on my bad 2600k (that needs 1.5v for 5 ghz), the VID at 4.5 ghz is 1.37v. (5 ghz is 1.39v vid) Pretty sure the vid on my better one was under 1.35v at 4.5...Edited by Falkentyne - 6/4/11 at 2:21pm