NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Larger VRAM bandwidth (144.2GB/s vs 48.06GB/s)
576 additional rendering cores
NVIDIA GeForce GT 1030 's Advantages
Released 2 years and 8 months late
Boost Clock has increased by 42% (1468MHz vs 1032MHz)
Lower TDP (30W vs 140W)