Q6600 and Volt-drop

rubberduck · 23 Jan 2008 at 13:34

Hi

I needed to put a fair few volts through my Q6600 to get it Prime stable at 3.4 GHz... However I noticed my tempeartures were still pretty low.

In the bios my Vcore is set to 1.525 and under full load my tempertaure hover around the 52 deg C mark.

When I load CPU-Z I notice that it reports a core voltage of 1.472 when idle and 1.44 volts under full load... Is this just a case of volt drop on my motherboard? My PSU is good (620W Corsair) so doubt if it is to blame.

FYI My motherbaord is a Gigabyte P35C DS3R. Is this volt drop a problem? If I want to try for a higher OC should a just set it higher in the bios but believe the value CPU-Z gives me?

Jody · 26 Jan 2008 at 13:15

what are you using to measure your temps?
what type of cooling?

I have a q6600, p35c-ds3r rev 2.0 @3.4 with turniq tower, [email protected], temps under load 66.62.62.66 idle-41.37.37.41

I use core temp and everest for my temps, i know that if you use speedfan you need to add 15c to your temps to make accurate

I would use everest for my volts also, i get quite a bit of vdroop+vdrop with this board

Jokester · 26 Jan 2008 at 13:17

Vdroop (the difference between idle and load voltages) is a specific requirement of Intel, it's nothing to worry.

blackninja · 26 Jan 2008 at 14:19

Jokester said:
Vdroop (the difference between idle and load voltages) is a specific requirement of Intel, it's nothing to worry.

Out of curiousity then what is the impact of modding boards to remove/reduce this so called vdroop and why is this generally seen to be such an issue that it needs fixing?

Jokester · 26 Jan 2008 at 14:21

It becomes an issue if you're pushing the chip to the limit of overclocking where the idle voltage may make the chip unstable, whilst ironically it's stable with the reduced load voltage.

blackninja · 26 Jan 2008 at 14:28

So, are you saying that the voltage required to run a chip at max overclock is possibly gonna be too high for that chip when it is idling due to the difference in voltage ? Well I is just thinking that I always thought that it was the lower voltage under load that caused problems and so you make it the same as the idle voltage to compensate if you can .... is that just me thinking that?

Semantics I know but the droop bit of vdroop caused me to think that way - I will now think of vdroop forever more as vplus or vover

(relative to stable load vcore of course )

rubberduck · 28 Jan 2008 at 09:14

blackninja said:
So, are you saying that the voltage required to run a chip at max overclock is possibly gonna be too high for that chip when it is idling due to the difference in voltage ? Well I is just thinking that I always thought that it was the lower voltage under load that caused problems and so you make it the same as the idle voltage to compensate if you can .... is that just me thinking that?

Semantics I know but the droop bit of vdroop caused me to think that way - I will now think of vdroop forever more as vplus or vover (relative to stable load vcore of course )

Try this thread

http://forums.overclockers.co.uk/showthread.php?p=10979871#post10979871

There is some good information about droop/drop in there