Low vid C2D, same 1.45v. limit to OC?

T

The-Tmann

Supreme [H]ardness
Joined
Nov 8, 2001
Messages
5,540
I got ahold of a E8600 w/ a low vid, <1.2v
does the same "high limit" of 1.45v. apply when overclocking this one,
or do you drop it down in relation to the vid?

I know 1.45 is just what most people feel is the limit, I'm not saying I will run that
just curious as I am able to pull 4.4Ghz at 1.275 :)
 
The limit applies to the process, its the same for all their 45nm chips, does not have to do with the VID.
 
Please do not post the same question in multiple forums.

BlueFireIce is exactly correct.

See my answer to your post in the Overclocking and Cooling forum.

Low Vid is either engineered by Intel by modifying the manufacturing process in some way or is a happy accident of the normal process where for some reason everything came together just right to produce a die/chip that requires lesser voltages to run and still make specs. Typically these die/chips are desirable as it is thought that such a "happy" chip will be a better over-clocker.

Vid , what it is and how it works is explained in the data sheets and the Thermal and Mechanical Guidelines easily found on Intel.com. Not all that technical and it boils down to Intel devised a method by which the chip can request whatever voltage it needs from the CPU voltage regulation circuitry. This is done for several reasons, even out manufacturing yields because now the chip can tell the motherboard what is required. Power savings as the chip requests lower voltages when not under load. And likely several other good reasons I cant think of atm. But in general a lower Vid range indicated a higher quality die/chip.

If this is true;
4.4Ghz at 1.275
you have a very very happy chip. Free hookers happy. Gratz.
 
ya hahahaha
free hookers happy

but yea, exactly what bill said.... IE for my 8400 they state that they can be manufactured to use .85 V - 1.326 (IN SPEC)... all luck of the draw. ive even been told that two CPUs made in the exact same batch could have entirely different VID's.

and to answer the OP's question ... YES, you scale it to YOUR VID and what YOUR CPU requires to be stable.
 
BlueFireIce said:
The limit applies to the process, its the same for all their 45nm chips, does not have to do with the VID.
Click to expand...
It's the same for all 45nm Core 2 chips. The limit is 1.55V for i7 CPUs (1.5V for sustained operation).
 
Zero82z said:
It's the same for all 45nm Core 2 chips. The limit is 1.55V for i7 CPUs (1.5V for sustained operation).
Click to expand...

I guess I should have been more clear about it being 45nm for that line, but thought he would get that since he asked about C2D.
 
You must log in or register to reply here.
Back
Top