I just bought a the Asrock 939Dual-SATA2 and a opteron 144. I figured this way with overclocking I can have about the fastest single core cpu they will probly every make. Then when dual core is used more in games and apps I can switch to dual core. Which may mean using the the AM2 socket and this riser card. Either way this MB should be in my main system for 3 or 4 years, and I expect it to used for something for much longer than that considering the upgrade potential of it. I have also heard this riser card works in the Asrock NF3 socket 754 board. So that board when from 754 to 939 now maybe to AM2. Who knows maybe we will see a riser card for the next socket after AM2, not that I like changing sockets.