Best card for Transccoding?

[TheDreadPirate]

Of all the choices, the 1070 is, by far, the best. Yes, the max TDP is 150W, but encoding doesn't come close to using that much and Nvidia is pretty good with idle power consumption. It has MUCH better codec support and much better quality over the 750Ti and RX550.

And you already have it, so no money spent.

If you were to buy a new GPU just for transcoding, Intel Arc is top of the list. That's assuming you live in a country with cheap power.