For anyone else this may help, if you have a 300w power supply don't bother with this card until you get a more powerful PS. It was the root of all my problems (with the 2nd card, first card had bad memory). I assume I am at the low end of power usage with 1 cd drive, 1 hard drive, and a celeron cpu compared to many that have multiple cd drives and hard drives in their systems as well as other components. After putting in a 500w my system runs great now, even took up my 3rdmark03 score 800 points. I wrote BGF to tell them they have great service, but Ill be damned if the minimum should not be 350w or 400w at the least for this card. Would have saved me alot of headache by seeing that on the box. Also the first tech guy I spoke to for the first problem showed zero concern that I only had 300w, whereas the 2nd tech (female even) saw that as the first culprit. Anyway, I have always homebuilt my PC's and have always taken the power supply for granted, not anymore