Originally Posted by CriticalHit
Originally Posted by pdasterly
Did some playing around with gpu clocks today since I had a fresh restart(giving windows 10 a try).
sapphire reference 290X with ek waterblock.
Card doesn't like high voltage, I get flashing blackscreen, sometimes video can recover by ctrl alt del and task manager will pop-up and let me close benchmark. That was using 150mv vddc
I have card stable at 1200\1600, 125 vddc offset and 50 power limit. Using triXX. Temps are in check, I didn't even bother to install gpu-z, but core, vrm1 and vrm2 never go above 50c on furmark burn in test. Ran valley, 50c gpu, 1.352 vddc, 366W vddc power in, vrm1 48 and vrm2 38
Is there a problem with my card?
Seems like I should be able to pump 200mv no problem?
I have the same flashing black screen if I push voltages and power limit too high .. Can't get to +200mv even with pt1 ..
Have just learned to accept it .. Some cards seem a bit fussy with power delivery IMO
Edit I can't even get mine to 1200 core - max stable around 1135 and can't touch memory speeds
Have you tried checking out how consistent your PSU power delivery is?
you might try OCCT and generating charts to see if you are having wild swings while under stressed conditions
It will generate charts on just about everythinghing on you voltages and voltage rails. look for oddities and or unusual amounts of Vdroop
These are OCCT voltage charts from a review I did a while back.