Bootable DVFD works, but (as stated in the readme): BECAUSE SOME LIMITATIONS OF 32-BIT PC ARCHITECURE IT IS POSSIBLE TO TEST NO MORE THEN 512 MB (OR BELOW) OF VIDEO RAM WITH THIS TEST. FOR TOTALLY TEST ABOVE MEMORY A WINDOWS-VERSION MUST BE USED. These days, that's not much of a test. A 64-bit version would be much appreciated. I haven't tried to use support, so didn't want to rate it, but since I HAVE to rate it, I'm saying poor simply because it's not being continually updated to support new technology.