cards that support dx11 will do better in fps in games that are dx10 and dx11.
if you don't like ati that much, just wait 30 days, nvidia is coming out with their dx11 cards (fermi) then.
for your res a 260 is not enough, you would need 2 x 260 or 2 x 275 or the best option currently being 1 x 5870.
if you like to stay with stage 1 oc and if all you are doing it mainly gaming then I would recommed you stay with stage 1 oc then you don't need LC and air will be fine.
also the noise package you had listed is completely pointless.
Here you go Ticket# 381439 --- Price: $2403 (To see this build click here) Price after current promotion $2403
Copy of Specifications:
Chassis Model: Special Deal Hot Seller - Cooler Master CM Storm Sniper
Exterior Finish: - Not Available
Trim Accents: - Not Available
Processor: Intel Core i7 920 2.66GHz (Quad Core)
Motherboard: EVGA X58 LE Edition SLI (Intel X58 Chipset) (Supports SLI or CrossFire)
System Memory: 6GB DDR3 1600MHz Digital Storm Certified Performance Series (Highly Recommended) (Hand Tested)
Power Supply: 1000W Corsair (Dual/Triple/Quad SLI Compatible)
Expansion Bay: - Not Available
Hard Drive Set 1: Operating System: 1x (1TB Seagate/Hitachi/Western Digital (7200 RPM) (32MB Cache) (SATA) (Extreme Speed)
Set 1 Raid Options: - Not Available
Hard Drive Set 2: Multimedia\Data: - No Thanks
Hard Drive Set 3: Backup\Misc.: - No Thanks
Optical Drive 1: DVD±R/RW/CD-R/RW (DVD Writer 22x / CD-Writer 48x)
Optical Drive 2: - No Thanks
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Video Card: 1x ATI Radeon HD 5870 1GB
Add-on Card: - No Thanks
Sound Card: Integrated Motherboard Audio
Extreme Cooling: AIR: Stage 2: Noctua NH-D14 Extreme Performance Cooler (Compatible With ONLY i7 Processors)
H20 Tube Color:- Not Available
Chassis Airflow: Standard Factory Chassis Fans
Internal Lighting: Internal Chassis Lighting System (Blue)
Enhancements: - Not Available
Chassis Mods: - Not Available
Noise Reduction: - Not Available
Boost Processor: FREE: Stage 1: Overclock the processor between 3.3GHz to 3.9GHz (Requires Air Cooling Upgrade)
Boost Video Card: - Not Available
Boost Memory: - Not Available
Boost OS: - Not Available
Windows OS: Microsoft Windows 7 Professional (64-Bit Edition)
Restore Kit: Digital Storm Specialized Recovery System (DVD Image Based)
Virus Protection: - Not Available
Office: - Not Available
Benchmarking: - Not Available
Install/Test Game: FREE: Please include a free copy of a hot-selling game
Display: - No Thanks
Surge Shield: - No Thanks
Speakers: - No Thanks
Keyboard: - No Thanks
Mouse: - No Thanks
External Storage: - No Thanks
Exclusive T-Shirt: FREE: Digital Storm T-Shirt - Black (Large)
Priority Build: - No Thanks, Ship Within 5-10 Business Days After Order Is Successfully Processed
Warranty: 3 Year Platinum Care Extended Parts & Labor Warranty
If I were you seein how you like nvidia I would wait for the fermi.