First and foremost :

Use at own risk! It might melt or catch on fire if your setup is lit.

UPDATE: The left ssd runs a bit hot, it is covered a bit to much. use only the right slot. or edit the file.

UPDATE 2 : I have been alerted by a user that not all cards/gpu combinations work. As i don't know much about computers exept the stuff i own i highly suggest you only print the first 1 or 2 mm of the object as a test to make sure your the gpu mount is in the right place for your motherboard! 

Having said that, i proudly present the Single PrintPuter.

It can be placed on the psu letting the pcu draw air from underneathe the motherboard, or on it's side naturally tilted at a nice 23.5 degrees just like our planet.

Takes a micro atx board, atx power supply and has room for 2 ssd's 

Gpu mount is for second and third cutout. Note picture 3, see that the top port on gpu gets a little close to the print,see foto's and edit file if you are not sure it fits.

As it is right now you need to tap the mounting holes for the motherboard and gpu to M4 thread. Step file is included so feel free to adjust mounting hole dimensions to your hardware.

Depending on your motherboard, you may need to file away part of some of the mounting points so that it can sit nice and flush on the mounting points (Picture 2)

Ssd's , fan and power supply use the normal mounting hardware.

There is a single square 8.5mm by 8.5mm hole in the front for your on off button. 

In case this is not big enough for you and you want all the motherboard mounting holes used there is even an optional extension(not tested!)! Its mounted using 1 4mm screw and an 80mm fan. (see screenshots)

How to print:

This puppy needs three perimeters and infill to your liking. It takes about half a roll of filament and 19 hours printing on .3mm

No skirt because that wont fit but do add a brim on the inside only, just to be sure.