AMD Radeon E9550 MXM 's Advantages
Boost Clock has increased by 13% (1266MHz vs 1124MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 48.00GB/s)
1792 additional rendering cores
AMD Radeon 540 Mobile 's Advantages
Released 2 years and 6 months late
Lower TDP (50W vs 95W)