NVIDIA GeForce GTX 970 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (224.4GB/s vs 56.00GB/s)
1152 additional rendering cores
AMD Radeon 550 's Advantages
Released 2 years and 7 months late
Boost Clock has increased by 0% (1183MHz vs 1178MHz)
Lower TDP (50W vs 148W)