I have sold several video cards with blocks in the past, no problems. When I listed it, I offered to remove the block and replace the stock cooler. No one ever took me up on it.
I emptied the block and capped the ports. Then wrapped the card in saran-wrap.
It will ship in the original box...
I.....bet....you.....Im.....the....oldest....motherf@#$er ....here. Im on STALKER2, DOOM:TheDarkAges, and Ive played HL2 since it was released on disc. I still build custom systems on consignment. Me and Keith Richards, just keep rockin.
The Corsair adapter you are considering is the 12VHPWR or Gen1 adapter. It will work, but Gen1 have been the ones that melt. If you can buy the Gen2 2x6 cable you'll be a little safer.
I have also seen instructions where it is acceptable to connect the second PCIe of a single cable in the...
That 5080 is a very well built card. It runs as well as the chip will allow and overclocks very well. Your price is fair too. If I needed one, Id grab this up.