Most of V1 boards don't work on modern systems. Depends on PCB design, CPU and motherboard. It's very hard to find V1, which works with AMD 3DNow! systems. Older (K6) systems don't have this problem.Oh man, reading this brings back all the memories. Makes me want to go home and reset up a K6-2+/MVP3 system for some Win98/Glide action. I have a Righteous 3D and a pair of Creative Voodoo 2s. I installed that Righteous on a more modern machine, but I think the guy that sold it to me lied about it working... Oh well, still a neat board to have.