actualy I think the G73JH GPU is still better than the G74SX...
the 1.5GB and 3GB memory difference wont matter cause the
GTX 560m is just a higher clocked GTX 460m which means it dont have the bandwith to take advantage of the 3GB memory space...
The 1GB ATi 5870 can perform better than the 3GB GTX 560m
-ASUS ROG G73SW-3DE-
-Intel Core i7-2630QM Mobile Quad Processor
-Intel HM65 Express Chipset +ICH10
-17.3" 1920x1080 120Hz Anti-Glare Matte Screen
-nVidia GeForce GTX 460m 1.5GB GDDR5 VRAM
-nVidia 3D Vision Active Shutter Glasses
-Creative EAX Advanced HD 5.0
-THX TruStudio
-8GB DDR3 1333MHz RAM (Max 32GB)
-2x500 Seagate Momentous XT Hybrid HDD
-Blu-Ray 4x Burner
-Logitech Performance MX Darkfield Laser Mice
-Microsoft Windows 7 Ultimate
-XBOX360, PS3, Wii