ah thanks for the reply Beefy , the only reason i asked was because the new temporary motherboard ive got has 4 mem slots but 2 are DDR2 and the other 2 are DDR3 , so wasnt sure if it would let me use 4x DDR2 in the board , i guess i could just try when it comes , but it can use the new Phenom II 6 core chip , i wanted the board so i could carry on using my old anthon x2 6400 , and 800mhz memmory until i can afford a better CPU and Ram.