Are these desktop components compatible?

I want to know if all these gaming pc components will work perfect together...

Western Digital Caviar SE WD2500JB 250GB 7200 RPM IDE Ultra ATA100 Hard Drive - OEM
XFX PVT88PYDF4 GeForce 8800GT 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail
COOLER MASTER eXtreme Power RP-650-PCAR ATX from factor 12V V2.01 650W Power Supply - Retail
mushkin 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model 996527 - Retail
ECS NF650iSLIT-A (V1.0) LGA 775 NVIDIA nForce 650i SLI ATX Intel Motherboard - Retail
Intel Core 2 Duo E6750 Conroe 2.66GHz LGA 775 65W Dual-Core Processor Model BX80557E6750 - Retail
COOLER MASTER GeminII RR-CCH-ANU2-GP CPU+ Board Cooler - Retail
ARCTIC COOLING Freezer 64 Pro 92mm CPU Cooler - Retail
APEVIA CF12SL-UGN 120mm Green LED Case Fan - Retail
APEVIA CF4SL-UGN 80mm 4 x Green Lights LED Case Fan - Retail
LOGISYS Computer CLK4GN 10cm Cold Cathode Light - Retail
ZEROtherm ZT100 thermal grease - Retail
RAIDMAX Smilodon Extreme ATX-612WEBP Black SECC Steel ATX Mid Tower Computer Case 500W Power Supply - Retail

and will these play a game like oblivion maxed out

Hi,

I don't see why they wouldn't be compatible, if they were built in the same machine. If they weren't the machine wouldn't turn on.