The Voodoo3-2000 is slightly faster than the V2-1000 in SLI. (That info is available on the 3drx website in a faq.) The V3-3000 is slightly faster again. However, the V2-1000 can be useful for the occasional game (mostly old ones now) that works best under Glide, or even only under Glide. Ultima Ascension comes to mind. I've also used my V2-1000 SLI setup instead of my Geforce when the occasional game would make the Geforce lock up (early builds of Unreal Tournament, Blood 2, etc.). You need to be running SLI to get 1024X728 resolution, remember.