after much debate with myself, i finally made the purchase (and installed it 2day). really didnt want to shell out the money for it, but greed (i think) made me do it. the reason i am here posting today is not to ask for help, but to give some information for others that may need it. my motherboard does not have pci-e 2.0 slot. (you can see what it is in my specs above in the link) it has the pci-e 16x yes these cards are backwards compatible with this slot as noted on the box and on sites with info about these cards. i just wanted to say, it runs just fine in my setup. with no overclocks on my cpu or my new gtx 280, out of the box 3dmark06 score 12k+ so if anyone was wondering how it ran when not socketed into a 2.0 board slot, and in the 1.0 board slot, i have to say it runs pretty decent. this 280 is running 33% faster while in the 1.0 slot(or should i say better) than my old 8800gts. hope this helps anyone that was interested. now maybe when i get a few extra bucks, ill finished my upgrades so far all ive done is upgraded the memory, the psu, and the gpu. id like to get a new motherboard, and cpu to go along with it. good day.