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Comments (45)

• numpad0
  > The cards had some kind of metal cable guide fin on the backThat's to slot into the front PCI brackets for full length cards. There's "full" size for PCI cards and most GPUs are considered "half" length cards. This is separate to Low Profile, so there are four possible slot compatibility configurations, namely HHHL, HHFL, FHFL, and FHHL. Real workstations(including Mac Pro) has slots cut in the case or a bracket to accept the card or that metal piece(which means a standardized solution to GPU sagging had existed even before PCIe was created).Also, on fans, it's not like blower fans are quieter at all, but in case anyone encounters a situation where turning up fans seem to be only creating noises without moving air or cooling yhe cards, it might be worth remembering that radial fans have higher static pressure and are better at forcing air through.edit: ps: people recreating this might want to know what case this is. The vast majority of ATX cases, even unnecessarily big ones, only has 7 PCI slots. Cases that can take four dual-slot cards is rare.
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  Aurornis
  > I got these 10,000 RPM fans because I wanted to make sure I was moving enough air, and they were the same price as slower fans. They are really loud! I wanted the motherboard to control their speed based on the GPU temperature, and this didn't work at first, so I just wore ear protection during initial setup.I think everyone remembers the first time they went from "I think I can tolerate some server fans. How loud can they be?" to "I had no idea a small 12V fan could be this loud"
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  comandillos
  I ended up buying 2 DGX Sparks interconnected over QSFP with the intention of getting rid (as much as I could) of any cloud-based AI provider. I'm running DS4 Flash 0731 on it and some OCR models, using Oh My Pi and OpenWebUI as my main ways to interface with the agent... and from someone that has been using Claude for a long time, I can definitely say I don't need it anymore. Not for the stuff I'm doing.
• rsolva
  I love this! Hacky recycling of old computer parts, home-cooked fan controllers and a website that is just plain HTML with a stylesheet that is so short I don't even have to scroll to read it all. Just write part 2 already, I want to know what you can squeeze out of those AMD cards <3
• matusnovak
  I did a very similar setup with 4x AMD Instinct Mi50. For the air intake I used a single Noctua Industrial PPC 14cm fan, with a 3d printed duct. In the end the cards don't produce that much heat. A single 14cm fan at low speeds was enough to keep them cool at 62 degrees max. A large fan is also more quiet. Also, removing the graphene pad betwee the die and the heatsink, and replacing it with a good paste, helped bring down the temperature by few degrees.
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  fabiensanglard
  Quite courageous to go with AMD. I am very curious to see Chapter 2 and how he solves the software stability that used to plague AMD AI applications.
• rcarmo
  Those are some pretty meaty scraps, way above what you’d have on several people’s shelves…
• hk1337
  Our definition of "Box of Scraps" is wildly different.
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  petesergeant
  > Around this time I also realized that I didn't have Ethernet in the garage, so I started cutting holes in the drywall at 11:00 PM.Ahh, one of those projects
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  _def
  > You'll start depending on it and then it'll get taken away from you.You can not get around this, conceptually. Local inference will keep depend on updated models for quite a while. Partly because they will contain outdated training data, partly because of demands for the improved models. And it's still not clear where this will lead us. We're still in the rosey phase where people get lured in.
• Muromec
  One piece of v620 costs about 450 eurobucks on ebay right now. Weird to see a card with no HDMI output at all.
• anon
  undefined
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  TacticalCoder
  > I printed this out of carbon fiber ASA, but probably boring old PLA would have worked just fine.I doubt it: PLA begins to soften at as low as 55 degrees Celsius. If there's weight on it, it's worse: the piece shall quickly deform and become unfit for its purpose.This rig looks like it means business: I think PLA would fail.If, like me, you cannot print ASA (say because you've got a printer that is not closed and that won't heat enough), then PETG-CF (PETG reinforced with some carbon fiber: it's got better heat deflection than plain PETG) is a safer bet than PLA for parts to put in PCs/servers/rack. Moreover PETG-CF do look really good.