Some GTX 970 numbers:

Gigabyte Geforce GTX 970 (non G1, triple fan model, stock clocks, and stock voltages)
Windows 7 64bit
8GB RAM
intel i5 something-k

X11 - 6600
x13 - 5200
x15 - 4500

This thing is whisper quiet compared to the 6950 it replaced. How much power is each algo using? For now I multiplied the 750Ti numbers by 2.2