So, in my son's PC, I swapped out the (low profile) radeon 6570 1GB with a radeon 5770 1GB I got off of craigslist last night. It's a pretty good card and it crushes the 6570 (no surprise). When I run 3DM2013, it gets through the first two benchmark sets, loads firestrike to about 95% and then the 3DM app minimizes. It can't seem to run firestrike. At first I thought the PC was short on ram (it only has 2GB + an E5200) but with the the 6570 it could get through all these benchmarks, including firestrike which it scored something like 765. Running the same video driver for both cards (13-9) on win7 x64. Nothing has changed but the video card. Any idea why the 5770 doesn't like Firestrike?