NVIDIA GeForce GTX 980MX 's Advantages
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (192.0GB/s vs 96.00GB/s)
640 additional rendering cores
NVIDIA GeForce MX550 's Advantages
Released 5 years and 7 months late
Boost Clock has increased by 12% (1320MHz vs 1178MHz)
Lower TDP (25W vs 148W)