Games not running like I expected.

I have an over clocked I7-920 (3.8) and three GTX275's. I can run Crysis at all medium settings without any glitches. If I run at all high, the game has problems with high action sequences. Screen is at 1920-1080 AW-2310. I have been out of the computer gaming scene for a while after purchasing a PS3. I missed computer gaming and that’s why I am back. Also my vaio desktop started having issues. Can anyone give me some pointers on what settings I should be running for smooth performance and best images? Also, what to do with AA. I recently ran 3DMark and received a P32000 (27000 GPU and 58000 CPU) and E72000 score. I read an earlier post about why the CPU score is so high compared to the GPU one but I don't know what they are talking about.  

Thanks

Processor: Intel Core i7 920 2.66GHz (Quad Core)
Motherboard: EVGA X58 3X SLI (Intel X58 Chipset) (Supports Triple SLI or CrossFire)
System Memory: 6GB DDR3 1600MHz Corsair Dominator with DHX Extreme Edition
Power Supply: 1000W Digital Storm Certified (Dual/Triple/Quad SLI Compatible) (Silent Edition Highly Recommended)
Expansion Bay: - No Thanks
Hard Drive Set 1: Operating System: 2x (300GB Western Digital VelociRaptor (10K RPM) (16MB Cache) (Extreme Speed)
Set 1 Raid Options: Configure HDD Set 1 to a Raid 0 Config - Stripe Performance (Requires Two HDDs)
Hard Drive Set 2: Multimedia\Data: 1x (1.5TB Seagate Barracuda (7200 RPM) (32MB Cache) (SATA) (Extreme Speed)
Hard Drive Set 3: Backup\Misc.: - No Thanks
Optical Drive 1: Blu-Ray Player/DVD Player (Play Blu-Ray and Play DVDs)
Optical Drive 2: DVDąR/RW/CD-R/RW (DVD Writer 22x / CD-Writer 48x)
Internet Access: Linksys Wireless-USB N 300Mbps (Supports 802.11n/g/b)
Video Card(s): 3x SLI Triple (NVIDIA GeForce GTX 275 896MB (Includes PhysX Technology)
Add-on Card: - No Thanks
Sound Card: Creative Labs X-Fi Titanium Fatal1ty Professional (PCI-Express Slot Based)
Extreme Cooling: H20: Stage 6: Sub-Zero LCS Dual Loop: CPU & Triple SLI/CrossFire Video Cards
H20 Tube Color: Red Tubing with High-Performance Fluid (UV Lighting Reactive)
Chassis Airflow: Standard Factory Chassis Fans
Internal Lighting: Internal Chassis Lighting System (UV) (Creates Glowing Effect for H20 Tubes)
Enhancements: - No Thanks
Chassis Mods: - No Thanks
Noise Reduction: - No Thanks
CPU Boost: FREE: Stage 1: Overclock the processor between 3.3GHz to 3.9GHz (Requires Air Cooling Upgrade)
Graphics Boost: FREE: Yes, Overclock the video card(s) as much as possible with complete stability
Memory Boost: - No Thanks, Please do not overclock my memory
OS Boost: - No Thanks, Please do not tweak the services on the operating system
Windows OS: Dual Boot (Windows 7 Professional 64-bit & Windows Vista Ultimate (32-Bit Edition)
Restore Kit: Digital Storm Specialized Recovery System (DVD Image Based)
Virus Protection: McAfee Internet Security (Includes: AntiVirus, FireWall and AntiSpyware)
Office: - No Thanks
Benchmarking: - No Thanks
Pre-Install Game: Crysis: Maximum Edition  Warhead + War (Pre-Install, apply updates, and test gameplay with my system

I didn't look at what was going to be out. I am not a hardcore computer gammer. I was in the Navy for the last 9 years and computers were too hard to take on a submarine. I trusted that a bleeding edge company would offer bleeding edge components and I looked at just what they offered. After I built my system and ordered it, I look around and found that I should have done a lot more research. My parents had just passed away and I was trying to find something to keep my mind off of it and that is why I rushed. I will probably upgrade this fall if I think it would be worth it. I don't know how hard it would be with water cooling.

I'm so sorry your parents passed away, Mallikii. You're in my thoughts and prayers.