50% decrease in performance after overclock??

[DioCassius]

Need some help. I've got a gts pro that i was recently trying to overclock. the memory is set to 400 default, and i went up to 430 no problem...but when i went to 435, my q3A fps dropped from about 100 to 50. i rebooted with the default memory clock, and performance returned, but not quite to normal...i got a 2 fps decrease with everything set the same. this is not a big deal, but its kind of scary that it seems i've damaged the card or something. Has anybody heard or witnessed similar situations, and is there something wrong here? thanks.

 

[rhinox99]

I've experienced the same thing on my Geforce DDR. It was very weird as well, the card did not like too high of a memory clock. It found it best to increase the mem and core only modestly about 15% as I recall. More than a certain number would cause my fps to drop, my only guess is that when it gets to high it also gets to hot and possibly causes some errors?!?!

 

[Dulanic]

I know on my Annihilator Pro (GeForce DDR) I took the memory from 300 to 366 and it was fine... but anything over 380 and I would take a performance hit and get artifacts.... I took it back down and it was fine.

 

[Spook]

Yeah, I experienced that too... Freaked the hell out of me, but i did find a fix... I reset the Bios.... Something with the AGP after I overclocked it, that it didn't like... I had to restore my Bios settings, but that did the trick for me...

I've had to do it a few times since but Only when I'm toying with the overclocking more. It works fine when I set the overclock, and keep it there...

 

[DioCassius]

Great...thanks for the tip..i'll give that a try