AMD Radeon HD 7730M 's Advantages
More VRAM (2GB vs 1024GB)
128 additional rendering cores
Lower TDP (25W vs 50W)
NVIDIA GeForce GTX 660M 's Advantages
Boost Clock has increased by 41% (950MHz vs 675MHz)
Larger VRAM bandwidth (64.00GB/s vs 28.80GB/s)