I presume so. It's probably PC 2100. I would go ahead and buy some nice memory. Dual channel kits like Corsair etc. 1gig x 2 of XMS or the like will be great! Addtionally, The Power supply in that old compac will not cut it. So new PSU...I personaly lke Antec modualar units but there are alot of them that are great. And will you are at it.... a new Case....sooooooooooooooooooo.......forget the compac and build a whole brand new system. It's expensive but you won't regret it!!!
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.