Re: Will another 512mb really make a difference?
If your mobo has dual channel capability, your would benefit from a double bandwidth operating range which would increase your system speed. Since you system looks quite new, I presume you have a dual channel capability mobo; if you are going to buy another stick, buy the same type you have now for a matched set required in dual channel.
Asus P4P800 SE
Intel P4 3.2 Gig 1024 Meg PC3200 cas latency 2.5
RAID 0 2-36.7 Gig SATA WD 10,000 RPM
200 Gig WD ATI ALL-IN-WONDER 9600XT
6500 Kb bandwith Internet Connection