Get the DDR3 PC3-10600. Since your MB supports the faster ram, you might be able too eek out a little extra performance out of the system by using the faster clocked ram.
Thank you for replying. But can you tell me what the CL7 vs the CL9 mean in the different speeds. I also just read about FSB speed of your mother board. It says my FSB speed is 1066. Should I get the RAM to match the FSB speed and if I get the higher speed RAM will it just run at the slower speed? Sorry for all the questions.