No offense to anyone but I would not buy a bloated retail system. In my expierence they don't run as fast as one you would build either. It is totally up to you but if something goes down the line like the board or PSU you may not be able to replace it without finding the exact same one. If you build your own you will be able to run your ram at better timings like the sticks I posted. They have a better latency than regular RAM which helps speed up the system. You will also not be able to overclock the processor either. I think you will be better off building your own. Just my take.
1993 Bonneville SC SSE With Supercharged Badges, Black and Gold, CAI, 180T, TR-55'*, 2.2 Pulley, Jet Stage 2 Chip, Ceramic coated PEM'*, Magnaflow, Flowmaster 80, Megs Tips.
1995 SLE (Wifes), White and Gold, CAI, APN, Magnaflow, otherwise stock.
1966 Ford Ranchero, 312ci 60 over block decked, GT40P heads Milled, RPM Air Gap intake, Holley 600, MSD Billet Dist., 6A Box, FlowTech Shorties, C-4 W/Shiftkit, 8" 4.11