NVIDIA GeForce GTX 670 's Advantages
Boost Clock has increased by 6% (980MHz vs 928MHz)
Lower TDP (170W vs 250W)
NVIDIA GeForce GTX 780 Ti Engineering Sample 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (336.6GB/s vs 192.3GB/s)
1536 additional rendering cores