Should say here that it`s a 4GB version.
Used to love my old Media Centre PC, great idea ahead of its time, though bad timing as Sky+ Box's came out shortly after. Used to be able to put my sky through it and do all the record, series link,pause live tv etc etc and straight to HDD, which you could remove and plug direct into any telly and play from the drive. Remember it even had that Lightscribe drive letting you burn a grey scale image onto a disk. Even sweeter when it was in the time of the Government Scheme you could get through most work places getting a discount and then paying for it through salary sacrifice, which off course they messed up since an "accessory" also happen to be an iPOD at the time lol.
Using a EVGA 600W1 (Supporting 49A on a single +12V rail) with my RX 580 8GB. Not to boast but errr. (it came with a little bit of white tape over the opening lol).
y you're welcome. fan-less are for media centre PCs (remember those?) more important is 12V Amps than total PSU Watts. Find out how many Amps your card draws peak then add 10-20% for headroom/startup load.
Can't speak for this GPU specifically but I have bought some previously from Ballicom and had no issues whatsoever. Return was a doddle as well.