NVIDIA GeForce GTX 980 Mobile 's Advantages
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (224.4GB/s vs 96.00GB/s)
1024 additional rendering cores
NVIDIA GeForce MX550 's Advantages
Released 6 years and 4 months late
Boost Clock has increased by 16% (1320MHz vs 1140MHz)