This adapter allows bulky high-performance GPUs to attach to the motherboard’s slots via a cable rather than being plugged directly into the slot. ![]() If you’ve been wondering how it’s even possible to cram that many GPUs into a motherboard, the trick is a piece of inexpensive hardware called a PCIe 1x to 16x riser card. But supply and demand issues are a recurring theme with mining rigs, and the boards that support more than six GPUs are often out of stock or seriously overpriced. These aren’t particularly pricey parts either, at least in theory, with many coming in at around $100, so they are worth consideration if you already gave your old gaming board to a friend. More serious cryptocurrency hobbyists use dedicated mining motherboards that have pre-tweaked BIOS settings and the ability to connect over a dozen GPUs. Keep in mind that some BIOS adjustments will be required to maximize stability with more than a couple of cards. Most recent gaming motherboards from top-tier manufacturers like Asus, MSI, or Gigabyte will suffice here, although check the documentation to see how many graphics cards the hardware can handle. Motherboardįlexibility and stable operation are the top considerations for mining motherboards, rather than all-out performance, since the goal is attaching as many GPUs as possible. The fan roar and exposed components don’t play well with others. The downsides are noise and exposure, so a separate, dry, well-ventilated room is recommended. It’s also much simpler to evaluate faulty fans, replace burned-out cards, clear dust, and perform other basic maintenance with the components in easy reach. With many rigs sporting a packed stable of full-sized graphics cards, it’s wise to ensure they can all breathe and run freely. The main point of the open-air frame is ventilation and space for the GPUs. Ingenious crypto miners have used everything from nailed wooden planks to milk crates with good results. Fortunately, there are frequently plenty of options on sale for under $100, and you can always make one from simple hardware store parts as the designs aren’t complicated.
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