2 months ago
I'm looking for options to power an external GPU box. The box will be custom made, therefore I don't have to use any specific format. I'm looking for something small, reliable, and affordable. It will power an Asus GTX 1070 TI Cerberus
I have seen small psu for the really tiny cases ITX and microPCs or whatever they call them. Also look at replacements for sff or usff PCs.
Here is a 200w usff for $20 https://www.newegg.com/Product/Product.aspx?Item=9SIADP08NC1481&Description=usff%20psu&cm_re=usff_psu-_-1B4-0016-001C2-_-Product
Those could be interesting indeed! Although I'm not sure I can see the 8-pin connector required by my GPU.. :/
They are not necessarily made for that, you may have to custom wire them. You may have to find out what wattage the GPU uses off what voltage rail (12v, 5v, etc) and make sure the psu can do that on that voltage. I'm not sure how small you need, a tiny one may not have gpu plugs or make voltage enough on the rails a gpu will use, is all I am saying. Should be able to find that out someplace. You don't want to get it together and have it not work. Or search for a project like that someone already did and posted someplace.
Check this out: https://graphicscardhub.com/psu-graphics-card/
Corsair SF450 is an excellent SFX PSU that should work well for this purpose, albeit overkill.
I've heard of smaller adapters that can then use external power bricks, but I can't speak to the quality or practicality of such units.
About 2 yr ago I bought a 450w psu on sale for $28, an enermax. But its a normal size psu. Its going to run a 2400g now. But if you want smaller than the normal form factor that would not work. If its ok just look for a sale eventually you will find one, and if you can go 350w even easier to find low prices.
SFX and TFX units are about as small as you can go without things becoming more of a nonstandard pain in the rear. These days, TFX options have kind of fallen out of favor, but you could probably find a decent one suitable for your 1070ti.
PicoPSUs are a thing, though. You might find more advice on these from SFF-oriented forums, rather than from here.