NVIDIA GeForce GTX 1660 's Advantages
Released 11 months late
Boost Clock has increased by 67% (1785MHz vs 1071MHz)
More VRAM (6GB vs 4GB)
Larger VRAM bandwidth (192.1GB/s vs 48.00GB/s)
768 additional rendering cores
AMD Radeon 550X 640SP 's Advantages
Lower TDP (50W vs 120W)