Hi all, pretty soon im replacing my aging P4 with a quad core and at the moment i have 2GB of DDR400 Ram. Im going to replace this with 8GB of DDR2 5400 Ram. however the motherboard supports the fastest DDR2 memory available. So my question is will using the slower memory (DDR2 5400) give me an noticable difference performance wise? the fastest DDR2 is so much more expensive than the slower. i will be encoding videos. running virtual pcs, playing videos, pretty taxing stuff. Any thoughts? thanks a lot