its basically "overclocker's ram", its rated at a 150mhz fsb, so if u had a ddr board and wanted to OC to 150, and wanted to make sure you got it there stabily, then ddr2400 would be ur best bet, all the ddr motherboards.. are "compatible" i guess, long as u can get it to go to 150, but no board or chipset has "Officially" said they support ddr2400.... hope this helps....
-neural