NVIDIA GeForce GTX 660 's Advantages
Boost Clock has increased by 12% (1032MHz vs 925MHz)
Lower TDP (140W vs 150W)
AMD Radeon R7 265X OEM 's Advantages
Released 1 years and 11 months late
Larger VRAM bandwidth (179.2GB/s vs 144.2GB/s)
320 additional rendering cores