[SOLVED] Gigabyte RTX 2060 SUPER 3x Windforce 8GB PINS?!?!?

Jun 21, 2020
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Hello, recently I have bought an RTX 2060 SUPER but I just noticed something. It has an 8 pin and 6 pin slot... So my question is, must I put a cable in the other 6 pin too after putting it in the 8 pin slot, or can I just play with the 8 pin slot only? And what are the difference if that's possible. (with/without 6 pin)

And also.. is 550W enough, with 2x 6+2 pins?