Ok, ive done some searching and i haven't found it being answer maybe it did with a different thread title, but I am going to upgrade my computer! As the DDR3 prices are now affordable and that i am in need of a new motherboard, my question is will i see a difference from 4gb ddr2 800mhz to 2gb ddr3 1333mhz in windows vista ultimate 32bit? Yes i am going from 4>2gb as i don't have enough for 4gb ddr3 hah, and oh I will be downgrading to 32bit as i have some compatibility issues with 64bit. The motherboard that i will be getting along with it will be a Asus p5k3 Deluxe motherboard and if not then i will still stay with ddr2 and get a Abit IP35 Pro, Thanks!