NVIDIA GeForce GTX 970 's Advantages
Boost Clock has increased by 10% (1178MHz vs 1071MHz)
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (224.4GB/s vs 96.00GB/s)
1152 additional rendering cores
AMD Radeon RX 550 512SP 's Advantages
Released 3 years and 1 months late
Lower TDP (50W vs 148W)