NVIDIA GeForce GT 550M 's Advantages
Lower TDP (35W vs 100W)
NVIDIA GeForce GTX 680M 's Advantages
Released 1 years and 5 months late
Boost Clock758MHz
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (115.2GB/s vs 28.80GB/s)
1248 additional rendering cores