Building A PC

Ok as you may have seen from the title i am building a new gaming PC my budget is $2500 - $4000 just depends of heres what i have so far

CPU: Newegg.com - Intel Core i7 920 Nehalem 2.66GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 130W Quad-Core Processor - Processors - Desktops
HEATSINK: Newegg.com - XIGMATEK Dark Knight-S1283V 120mm Long Life Bearing CPU Cooler - CPU Fans & Heatsinks
GPU: Newegg.com - SAPPHIRE VAPOR-X 100269VXL Radeon HD 4890 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - Desktop Graphics / Video Cards
RAM: Newegg.com - GeIL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10660) Triple Channel Kit Desktop Memory Model GV36GB1333C9TC - Desktop Memory
HDD: Newegg.com - Western Digital Caviar Black WD1001FALS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drives - Internal Hard Drives
MOBO: Newegg.com - ASUS Rampage II Extreme LGA 1366 Intel X58 ATX Intel Motherboard - Intel Motherboards
PSU: Newegg.com - CORSAIR CMPSU-750TX 750W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply - Power Supplies
CASE: Newegg.com - COOLER MASTER HAF 932 RC-932-KKN1-GP Black Steel ATX Full Tower Computer Case - Computer Cases

Also for the GPU i may wait for the 58XX cards to come out.

so tell me if these parts are compatible, etc

also would i be able to run crysis on max if i get the 58XX series cards?

The reason why i put this thread here is because i couldn't find any other place to put it.