hey im looking for some advice/debate. i have a hp pavilion 750n. i have upgraded the memory to 2gb, the video card is ati radeon 9800 pro all in wonder, and i have upgraded the sound card to soundblaster audigy . i notice the computer still lags at times. i am wanting to upgrade my p4 1.6 cpu. howver i need to know what type socket it is so i can purchase a new one. i cant seem to find it by googling and was wondering if anyone knew. also what would be the best cpu upgrade for my computer. i was thinking of buying a new motherboard and tower on a side note. would my vid card, sound card, and memory be compatible to any MB i bought? thanks for the help.