We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS PCI and 3GB VRAM GeForce GTX 780 Ti Engineering Sample to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce 8400 GS PCI 's Advantages
Lower TDP (25W vs 250W)
GeForce GTX 780 Ti Engineering Sample 's Advantages