So I'm fairly new to PC building and I bought a R9 390. Now my current PSU (RK p550) could run it watt wise (Just) but it doesn't have any 8 pin connectors.
This is where I fall flat. I have no idea how to supply the auxiliary power to the GPU. Would a new power supply need to be bought or will I be able to use my current one with some adapters. Please halp
You can get molex to 6 pin adapters (8 pin or 6 pin?) but one thing to think about is as psu's age they're not able to reliably supply as much power. So if it was barely able to supply enough power before it may no longer be able to.
_(ツ)_/¯ Idk they always seem to include them with video cards. In fact the 390 will probably come with one.
You might want to just upgrade though. I think rule of thumb is 30% more than the systems minimum requirement. So if your right on the edge you will probably not get full performance out of the card and if the psu has degraded at all you will probably have instability.