I have a few old miners (D3's, faulty S9's and L3's) and I was looking for a way to utilize some of the leftover hardware. I have looked a bit and I haven't found a practical solution to power up a GPU mining rig using one of the preceding's PSUs. (Available is APW3+ and APW3++)
But it's fairly expensive considering I can buy a 400-500w PSU for that price. Anybody can pitch in a better idea to utilize the otherwise wasted PSUs?