mga master....my concern is why slow and dagan sa isa nako ka pc compared sa other 2 nga pc of thesame specs...unsa man jd reason behind niya? is it the processor or hard disk or power supply or

??......unsaba...hoping ma enlightened ko sa inyung mga inputs and from that i could get an answer. ive tried google but dghan au inputs, it would be nice in this forum kay more is based on experience.
P4 2.4
1gig ram kingston
256mb vcard gforce fx5500
80gig hdd seagate
asus p4vp-mx mobo (updated bios)
500wats psu
salamat sa info ug sa pag share mga master...