The Egg wrote:Well sure, you could buy a 750w SeaSonic with 20A on the 5v rail or a 1250w SeaSonic with 25A there + the $15 adapter I showed a picture of*, and have to be careful about not using too much power.I suppose it depends on what you're intending to power. I see plenty of modern PSUs offering 20-25A on the 3.3 and 5v rails, some good up to a combined 130watts. While that might not be alot, it should get most systems running, provided you take it easy on the drives and add-on cards.
Or you could buy a vintage 70% efficient Antec Smartpower SL350 with 35A for $3 and recap it. Heck, may as well splurge on the SL400 with 38A because it's the same price.
When I didn't have enough Rambus for a dual PIII-s 1400 I used an i-RAM with 4GB of DDR to hold the swapfile, running through a SATA to IDE adapter. It moved 60MB/s on the ATA66 controller, which I suppose was pretty good. We live in an age now when NVMe SSDs have more bandwidth than the main memory of that computer.
*I would prefer an AUX adapter that used a couple SATA power connectors rather than tap the ATX harness, but so many SATA power connectors are missing the 3.3v wire that it often wouldn't work.