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What is the best way to power the asrock h110m-stx and a GTX 1080 all with one PSU

jtd871

SFF Guru
Jun 22, 2015
1,166
851
You realize that the STX motherboards don't have PCIe expansion slots, right? If you're that much a noob (nothing wrong with it, we all were), I'd strongly suggest building mITX first and maybe jumping down the STX rabbit-hole later on.
 
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wheatley

Cable Smoosher
Original poster
Sep 5, 2017
10
5
You realize that the STX motherboards don't have PCIe expansion slots, right? If you're that much a noob (nothing wrong with it, we all were), I'd strongly suggest building mITX first and maybe jumping down the STX rabbit-hole later on.
Yes! I know that I know that. I would have to use the m.2 ultra -> PCIe x 4 -> PCIe x 16 with (P4SM2) the http://www.hwtools.net/ExtenderBoard/P4SM2.html
But what is the best way to power both the riser and the mother board and the 1080 (with an external PSU)
 
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Kmpkt

Innovation through Miniaturization
KMPKT
Feb 1, 2016
3,382
5,936
You have to split the 19V correctly to power both the Mini STX board as well as a converter from 19V to 12V that can power a GPU. It requires a reasonably advanced knowledge of electronics to do this properly. I tried it a couple of years ago without said knowledge and completely fried a Gigabyte Brix and a 750ti.
 

wheatley

Cable Smoosher
Original poster
Sep 5, 2017
10
5
You have to split the 19V correctly to power both the Mini STX board as well as a converter from 19V to 12V that can power a GPU. It requires a reasonably advanced knowledge of electronics to do this properly. I tried it a couple of years ago without said knowledge and completely fried a Gigabyte Brix and a 750ti.


How will the DC-DC board fix this problem? Will it have a splitter built in? Do you have pictures of the prototype?
 

Kmpkt

Innovation through Miniaturization
KMPKT
Feb 1, 2016
3,382
5,936
It essentially works as a splitter. One portion of the board will take a 16-24V input and convert it to a 4pin SATA header and two 8pin PCIe headers. The other portion of the board passes an unaltered current that matches your AC-DC's output. That can then go to the Dynamo Mini (basically an HDPlex 160W DC-ATX) or a motherboard with matching power input.
 
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wheatley

Cable Smoosher
Original poster
Sep 5, 2017
10
5
It essentially works as a splitter. One portion of the board will take a 16-24V input and convert it to a 4pin SATA header and two 8pin PCIe headers. The other portion of the board passes an unaltered current that matches your AC-DC's output. That can then go to the Dynamo Mini (basically an HDPlex 160W DC-ATX) or a motherboard with matching power input.

awesome what is the estimated price of the board?
 

Kmpkt

Innovation through Miniaturization
KMPKT
Feb 1, 2016
3,382
5,936
I am aiming to sell the board for 75 USD. If you want to use it for a 24 pin ATX based PC, then I will bundle it with my custom variant of the 160W DC-ATX Pico-style PSU for 125 USD (normal price 75 USD + 58 USD). Will have the same shipping arrangement as HDPlex's units.
 
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