What is the difference

What is the difference between this Sapphire Radeon NITRO Rx 470 https://www.amazon.com/Sapphire-Radeon-NITRO-Graphics-11256-10-20G/dp/B01N0MI5PY/ref=sr_1_3?s=books&ie=UTF8&qid=1481377024&sr=8-3&keywords=Sapphire+Radeon+NITRO%2B+RX+470 and this Sapphire Radeon NITRO+ Rx 470.If the difference is on power consumption, then i am okay with it,