Tiny (Less than 55mm tall) 250+ Watt PSU?

skeldal

Commendable
Oct 10, 2016
2
0
1,510
TL;DR: Need a PSU that's less than 55mm tall, has 3x4-pin cpu connectors, and can deliver 250 watts. I'm open to "ghetto" ways of meeting those requirements, if need be.

Details:

I recently discovered that there're micro-ATX motherboards capable of running Threadripper CPUs, and I had an idea for a build relying on a thin horizontal case like this one:

https://streacom.com/products/fc5-alpha-fanless-chassis/

The build is intended to be CPU-heavy and so the graphics card will be a basic and older card (one of the ones that doesn't even need its own PSU cables), which is why I want to avoid one of the fatter micro-ATX cases that has room for full GPUs.
I am planning on modding the case so that I can supply adequate cooling for the Threadripper, so there's no need to dig into that.

The issue I ran into is that the Threadripper will need 3 4-pin CPU connectors, which are rarely available on PSUs small enough to fit into the case. The best I've been able to come up with is using a connector to bridge multiple Pico PSUs to get that many connectors together. That being said, I'd much prefer something cleaner and more efficient, because I doubt such PSUs are a good match for a Threadripper.

I've also tried looking at Flex format PSUs, but I still can't find any with 3 connectors, although some do hit 300Watts.

I know this is a really niche build, but I'd appreciate any help y'all can provide.

 
Solution
https://smallformfactor.net/forum/threads/600w-custom-modular-flex-atx.5942/

There's a further link to a custom FLX psu that's rated at 400/600w, both Platinum units I believe. It shouldn't be too hard to convert pcie to eps by repinning the correct connector as they are both just 12v lines. If you got dual 6+2pin, that would convert to 4x4pin easily. Just over 40mm tall. Or since it's custom built, Mebe contact the company and have them use 4x EPS and leave you with a single 6pin pcie instead. They might just do that based on the uniqueness of your project.

Karadjgne

Titan
Ambassador
https://smallformfactor.net/forum/threads/600w-custom-modular-flex-atx.5942/

There's a further link to a custom FLX psu that's rated at 400/600w, both Platinum units I believe. It shouldn't be too hard to convert pcie to eps by repinning the correct connector as they are both just 12v lines. If you got dual 6+2pin, that would convert to 4x4pin easily. Just over 40mm tall. Or since it's custom built, Mebe contact the company and have them use 4x EPS and leave you with a single 6pin pcie instead. They might just do that based on the uniqueness of your project.
 
Solution

Rogue Leader

It's a trap!
Moderator
250w is not enough. The lowest Threadripper has a 180w TDP, the reality is it will draw well beyond that, for examply my "95w" TDP 1800X easily has drawn 120w. You're asking for trouble.

I would get the PSU that karadjgne suggested, They say they are custom built so I'd bet they can make it pinned for what you need.

Now I'm dying to know how you plan to solve the cooling issue.
 

tejayd

Prominent
Mar 11, 2018
545
0
660
https://www.hdplex.com/hdplex-400w-hi-fi-dc-atx-power-supply-16v-24v-wide-range-voltage-input.html

Here's a different type that may work for you. It is basically what you would use for the ultra sff PC's like the s4 mini. http://nfc-systems.com/s4-mini/

Edit. Wattage: 400W (500W Peak) >94% DC-DC Efficiency
Connector: ATX 24PIN-24PIN Cable (21cm) x 1,8-4+4PIN Power cable for CPU (45cm) x 1, Dual 8PIN (6+2 Type Dual Head) Power Cable for PCIE device x 1, 4PIN -SATA Powerx4 (45cm), 7.4x5.0mm DC Input to Molex Male 4PIN Cable (45cm)