I Have upgraded my computer, from a Pentium 4 motherboard running XP, that had a pci-e 1.0 to a Gigabyte GA-EP45-UD3P running Windows 7 64. I had a 8800 GTS in the old computer. According to Dacris Benchmarking 2-D was 312 MP/s & 3-D 3.14 MTps using 8x pci-e 1.0. The new MB benchmarked at 2-D 495 Mp/s & 3-D 316 Mtps. Dacris report says video too slow for processor on both systems. I bought a new GT-240 and installed in 16x slot and benchmarked at 475 MP/s & 3.14 PTps and report says video card too slow for processor. I installed the GT-240 in slot 2 Pci-e 8x slot and benchmarking says 2-D 500 MP/s & 3-D 317 MTps. How can the 8x slot be faster? The new computer is much faster and with pci-e 2.0 how can the video cards benchmarking be about the same as the old computer? Sorry for the long questions.