Bit stuck here
Alienware M18x : Stealth Black
Processor: Intel Core i7-2720QM (2.20GHz, 6MB cache, Quad Core)
Genuine Windows 7 Home Premium
8 GB Dual Channel DDR3 SDRAM at 1333MHz (2 DIMMs)
750 GB SATA Hard Drive (7200RPM)
Optical Drive : 8X DVD+/-RW Drive
Display: 18.4in Widescreen Full High Definition (1920X1080) WLED LCD
Graphics: Dual 2GB GDDR5 AMD Radeon HD 6970M CrossfireX
English Genuine Windows 7 SP1 Home Premium (64Bit OS)
Wireless: Dell 375 Bluetooth Card
Wireless : Killer Wireless-N 1103
Battery : Primary 12-cell 97W/HR LI-ION
Internal Backlit Keyboard
Or
Base Alienware M17x
Operating System English Windows® 7 Home Premium (64 BIT)
Memory 8192MB (2x4GB) 1600MHz DDR3 Dual Channel
Keyboard Internal UK/Irish Qwerty Keyboard
Video Card 2GB GDDR5 NVIDIA® GeForce® GTX 660M
Hard Drive 500GB 7,200rpm SATA 6Gb/s HDD
Optical Devices DVD+/-RW (Read/Write)
Sound Creative Sound Blaster Recon3Di with THX TruStudio Pro Software
Wireless Networking Killer Wireless-N 1103 a/g/n 3x3 MIMO with Bluetooth 4.0
Cables UK 2M 250V Power Cord
Documentation/Disks Southern Europe Documentation (EN, SPA, POL, GRE)
Bundle N05W7M01
Extended Service 1 yr Next Day In-Home Hardware Support
Placemat Placemats (Eng, Gre, Pol, Ara, Rus)
Order Information Alienware M17x Order
Primary Battery Primary 9 cell Li-Ion Default Base Battery
Processor Intel® Core™ i7-3610QM (6MB Cache, up to 3.3GHz w/ Turbo Boost 2.0)
Camera Integrated Skype HD Certified FullHD Camera with dual digital microphones
Color Choice Alienware M17x Stealth Black – 3D Compatible
Avatar Alienhead Glow
TimeZone (GMT + 00.00) Dublin, Edinburgh, Lisbon, London
AlienFx Colour Plasma Purple
Accidental Damage Support No Accidental Damage Protection
OS Customization Alienware Glow Wallpaper
LCD 17.3" 120Hz w/ 3D Bundle WideFHD (1920 x 1080) WLED LCD
Additional Software Alienware M17x Resource DVD
Protect your new PC McAfee® SecurityCenter 30 Day trial version
Power Supply 240W AC Adaptor
Cant decided between a m18x with 6970 crossfire setup or a m17x R4 with nvidia 660m and 3dvision 2 with Lightboost technology?
I like the 18inch screen of the m18x and the extra power of the crossfire setup but also like the 3d vision and 120hz screen. Do you think the 660m will run most games at high settings ?
Please help me decide

Alienware M18x : Stealth Black
Processor: Intel Core i7-2720QM (2.20GHz, 6MB cache, Quad Core)
Genuine Windows 7 Home Premium
8 GB Dual Channel DDR3 SDRAM at 1333MHz (2 DIMMs)
750 GB SATA Hard Drive (7200RPM)
Optical Drive : 8X DVD+/-RW Drive
Display: 18.4in Widescreen Full High Definition (1920X1080) WLED LCD
Graphics: Dual 2GB GDDR5 AMD Radeon HD 6970M CrossfireX
English Genuine Windows 7 SP1 Home Premium (64Bit OS)
Wireless: Dell 375 Bluetooth Card
Wireless : Killer Wireless-N 1103
Battery : Primary 12-cell 97W/HR LI-ION
Internal Backlit Keyboard
Or
Base Alienware M17x
Operating System English Windows® 7 Home Premium (64 BIT)
Memory 8192MB (2x4GB) 1600MHz DDR3 Dual Channel
Keyboard Internal UK/Irish Qwerty Keyboard
Video Card 2GB GDDR5 NVIDIA® GeForce® GTX 660M
Hard Drive 500GB 7,200rpm SATA 6Gb/s HDD
Optical Devices DVD+/-RW (Read/Write)
Sound Creative Sound Blaster Recon3Di with THX TruStudio Pro Software
Wireless Networking Killer Wireless-N 1103 a/g/n 3x3 MIMO with Bluetooth 4.0
Cables UK 2M 250V Power Cord
Documentation/Disks Southern Europe Documentation (EN, SPA, POL, GRE)
Bundle N05W7M01
Extended Service 1 yr Next Day In-Home Hardware Support
Placemat Placemats (Eng, Gre, Pol, Ara, Rus)
Order Information Alienware M17x Order
Primary Battery Primary 9 cell Li-Ion Default Base Battery
Processor Intel® Core™ i7-3610QM (6MB Cache, up to 3.3GHz w/ Turbo Boost 2.0)
Camera Integrated Skype HD Certified FullHD Camera with dual digital microphones
Color Choice Alienware M17x Stealth Black – 3D Compatible
Avatar Alienhead Glow
TimeZone (GMT + 00.00) Dublin, Edinburgh, Lisbon, London
AlienFx Colour Plasma Purple
Accidental Damage Support No Accidental Damage Protection
OS Customization Alienware Glow Wallpaper
LCD 17.3" 120Hz w/ 3D Bundle WideFHD (1920 x 1080) WLED LCD
Additional Software Alienware M17x Resource DVD
Protect your new PC McAfee® SecurityCenter 30 Day trial version
Power Supply 240W AC Adaptor
Cant decided between a m18x with 6970 crossfire setup or a m17x R4 with nvidia 660m and 3dvision 2 with Lightboost technology?
I like the 18inch screen of the m18x and the extra power of the crossfire setup but also like the 3d vision and 120hz screen. Do you think the 660m will run most games at high settings ?
Please help me decide
