Here's a comparison - GK107 (Kepler) vs. GM107 (Maxwell)

The GM107 die is 26% larger, has 256 more cores, has 570 million more transistors, 10% more bandwidth, is rated at 494 *more* GFLOPS FP32 (a whopping 61% increase), but uses 6.25% less power to do all this. Oh and 400MHz faster VRAM too (an 8% increase).

So Nvidia is telling me i can crunch 61% faster using slightly less electricity in just 1 generation? I call BS

BTW these GPUs are launching in 3 days.