Background info: Bought them used (registered, willing to RMA, fairly well established member of a forum). They are BFG GTX 285 OC cards, but were shipped with the OC2 BIOS loaded. That's how I kept them. However, through all furmark testing, I also ran OC clocks. They have been folding for the weekend, and put out around 18,000 PPD. Initially, I was having problems with both in SLI. I was running the latest WHQL Drivers (191.07) with an SLI bridge. While playing Borderlands, on occasion, the game would freeze, and I would have to open Task Manager and then "Switch To" the game. After further investigation, I noticed that after this happened, my primary 285 ran at 3D clocks, and my secondary 285 ran at 2D clocks. I then tested them individually, GTX285 #2 first. I hit up a Furmark stability test, and within the initial heat-up, the screen froze for a second, then continued. This was also paired with a drop in temperature. This was the Display Driver crashing, no? So then, I tested GTX 285 #1, all went well. Then, I tried putting my Geforce 210 as secondary to fold/physx, and it had a fit starting up. I finally reseated my good 285 a number of times and took out the 210 and booted up. I then cleaned out all the nVidia drivers, and loaded up the latest Beta drivers (195.39). I was just playing Borderlands on it, and within about a half hour, I noticed a quick drop in FPS then a rise, but it never got as fluid as before. I checked GPU-Z, and it was running at 2D clocks. What is going on with these cards? I'm already planning on RMAing #2 because I know it's crashing on a regular basis. This is the first time I've had a problem with card #1. PS: Are cards supposed to clock up to 3D clocks when folding? Because after that last crash, this one isn't.