Quote Originally Posted by Johnny Bravo
boblemagnifique your correct - what I have learnt is that this connector is for cards that do not feature an external power connector - as these are the cards that draw all their power direct from the PCI-E slot.

I also doubt that its anything to do with our power supply - the vcore is "isolated" from the 12V system by the PWM section - any droop in the 12V feed will be buffered by the electrolytic caps that feel this circuit.

All in all this is quite a puzzle - kinda want my board back now just to see if it suffers the same problem!

Ok thank you of your explanations

I have just measured different the tensions before making my vmods (Vddr and Vmch)

I have (with 8800 GTS stock fréquency) :

Vmch : 1.4v bios = 1.537v réal
Vddr 2.3v bios = 2.36v réal
Vcore 1.3575v bios = 1.433v réal
Vtt 1.4v bios = 1.51v réal

I mesure with multimeter (I have in the bios there are the tensions of posted , they are not similar)