AMD Radeon E9550 MXM 's Advantages
Released 4 years and 4 months late
Boost Clock1266MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 50.24GB/s)
2208 additional rendering cores
NVIDIA GeForce GT 640M LE 's Advantages
Lower TDP (32W vs 95W)