Am I having a major one? Had a box with 2 GTX480's in it. The cards were overheating and I decided to take 1 out. The one I took out runs fine. The one I left in will run unattended in about 7.5 hours.(Very Slow.) When I display the file running in BOINC manager, it starts clicking of the minutes about 1 minute per second. When the screen goes blank, it starts it's slow computing thing. I've double checked every setting I can think of and haven't come up with the solution. I'm getting old, so does anyone have a clue?