you'll be fine, assuming your other specs are up to it. just dont break the 4GB barrier on 32bit
here are my specs
Processor: Intel Core 2 Duo E6600 with Arctic Cooling Freezer 7 Pro
Motherboard: ASUS P5N-E SLI
Cooling: FRONT IN 120mm SIDE IN 4 x 120mm BACK OUT 120mm PSU 120mm
Memory: OCZ 2Gb PC2-6400 DDR2-800 4-4-4-15 (2x1gb)
Video Card: BFG GeForce 8800 GTS OC 320MB
Harddisk: Western Digital 160GB SATA and a Western Digital 250GB SATA
CD/DVD Drive: SONY DVD-ROM (BLACK) / DVD-RAM DRIVE SONY DW-G120A (BLACK)
CRT/LCD Model: 19" SAMSUNG
Case: COOLERMASTER STACKER 831
Sound Card: Creative Sound Blaster Audigy SE
PSU: OCZ ModStream 520w ATX2.2
i got 2gb on its way to me but not for a few weeks so should i wate till i got the 4gb in to will it runs a ok on 2gb?