hello everyone. Im at it again,have a asus 478 mobo w/ 756(512+256)2700mhz ram,celeron d 2.9ghz cpu.I was thinking of puttingin a p4 800mhz fsb with hyper threading in place of celeron d. I found a p4 for under 80.00 dol. I HAVE A 350 W. ps in place.just want to upgrade what I have. Not looking for new sys. just yet. Is is worth the bucks?