this post was submitted on 23 May 2024
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Linux

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Custom Libreboot 9020 Optiplex PC (sh.itjust.works)
submitted 5 months ago* (last edited 5 months ago) by gnutard@sh.itjust.works to c/linux@lemmy.ml
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Specs:

i7 4790K ($50)

9020 Optiplex Motherboard ($10)

32GB DDR3 RAM ($35)

7900 XTX 24GB VRAM ($900)

1TB M.2 NVMe ($50)

EVGA 700 BR PSU ($50)

24 pin to 8 pin adapter for motherboard ($20)

NVME PCIe x4 Adapter ($12)

Molex to fan adapters ($7)

Power button adapter ($6)

Total: $1140

Using Arch GNU/Linux (Tried installing Debian, couldn't get the AMD drivers to work properly, so I'm using Arch for the moment)

Can run Stable Diffusion, LLMs, and basically all my games at 1440p High to Ultra settings (RDR2, GTA V, Arma 3, etc.)

GPU passhtrough doesn't work for the moment, but I can still run virtual machines. This is a Haswell motherboard, which can be 100% freed in the BIOS over time when we have enough Libreboot devs who can reverse engineer the rest of the blobs. Intel ME is also disabled (theoretically, since you can't actually fully remove it). This is a build that I did for fun, in the future, I'm planning on switching to a Z690-A motherboard with DDR5(can be flashed with Dasharo firmware). If you have any questions, feel free to ask!

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[–] edinbruh@feddit.it 25 points 5 months ago* (last edited 5 months ago) (2 children)

You are not supposed to power the GPU like that. You should use two separate cables from the supply. The other connector of the same cable is intended to "daisy chain" low power cards.

It will probably work anyway, but better safe than sorry.

Edit: I think it's needed because:

  1. The power supply might have separate circuits for separate cables and might not be able to supply all the power needed by the GPU through just one
  2. The cable might not be rated to have that much power flow through and might overheat and melt over time
  3. If you could just fork the cable into two why would they put two connectors on the GPU, it's not like they have different voltages, they are literally daisy chained
[–] gnutard@sh.itjust.works 14 points 5 months ago

I just fixed it, thank you for the heads up!

[–] dsemy@lemm.ee 6 points 5 months ago (1 children)

Unless you have a very bad PSU, this doesn't actually matter.