If you are upgrading chances are you will be looking into getting some DDR3 memory. There are so many memory companies on the market it can be a little confusing what memory is best suited for your setup. Fact is, most new motherboards on the market accept DDR3 memory. Don't get me wrong, there are still plenty of motherboard's that accept DDR2 memory and DDR2 is still as faster or faster than DDR3. The big plus with DDR3 memory is higher speed.