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Gigabyte B550M H AM4 mATX Motherboard $99 (Was $139) + Delivery @ PC Byte


Sub-$100 B550 board. Pick up available at their Auburn and Hornsby stores in Sydney.

Supports AMD Ryzen 5000 Series and 3rd Gen Ryzen

Dual Channel ECC/ Non-ECC Unbuffered DDR4, 2 DIMMs

4+3 Phases Pure Digital VRM Solution

Ultra Durable PCIe 4.0 Ready x16 Slot

Ultra-Fast NVMe PCIe 4.0/3.0 M.2 Connector

RGB FUSION 2.0 Supports Addressable LED & RGB LED Strips

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PC Byte
PC Byte


  • Wow, no heatsinks on the VRMs? Is that wise?

  • +2 votes

    Cheap mobo
    sad we can't find a graphics card to go with it

    • Never mind finding one, how about being able to afford it?

      A graphics card costing more than every other component put together feels wrong.

      • Yeah but the floodgates have opened now, people are salivating for a chance to pay these prices. Nvidia and AMD are never going to make them cheaper again, that would be stupid.

  • Is the website broken in Firefox? Works fine in Chrome.

  • any b550 itx deal?

  • Will that Smart Access Memory thingy work with Nvidia GPUs as well? Something called Resizable BAR if I'm not wrong

  • Any recommendation on PSU? I plan to make a miner rig.

    • Anything titanium rated as you want more pcie plug and higher wattage is better,

    • Depends on what your targeted wattage use is.

    • I am thinking of using this with rx 580s.

      Hopefully can get some $$$$ back.

      • How many rx580s?
        Also have you accounted for taxes when you sell the crypto, if you plan on selling to cover the electricity? (I've done the maths myself and it's really not worth it in Australia unless your electricity is free or you only mine in off-peak hours).

        • 2 to begin with.
          Yes will have to account for it.
          Got solar so free electricity during the day.

          Could you explain the maths in your case?

          • @chintu123: There's a hefty price difference between Platinum and Titanium PSUs so do a calculation on the ROI and how long it would take to gain back the difference due to efficiency. But otherwise a good 750W PSU from the big names like Seasonic, Corsair, EVGA, be quiet! (not that big a name but still very good PSUs), Silverstone will cover you for 2 cards, add 300W for each additional card you think you would run later on. Check the number of plugs and current on the 12V rail they can do and you'll probably find that you're down to 2-3 choices.

            If you're not mining 24/7 then the return you get and time to make back the hardware costs just aren't worth it. If you don't have solar then electricity rates during peak times just kills the profit once you consider tax. Tax takes out a third of the total revenue and then you take the cost of electricity from that (electricity isn't deductible if you're mining as a business, nor are the hardware costs, and then mining as a business throws a whole different ball game), it turned out for me to roughly be 50-60 cents a day per card in profits, time to actually get ROI after accounting for hardware costs it just didn't become feasible unless I'm banking on the price of the crypto to significantly increase.

            I might do it when it gets cold and write off the costs as heating lol

            I think other people are sharing the same thoughts as I'm seeing a bunch of mining rigs being sold off on facebook and gumtree and occasionally ebay. I'm not talking just the GPUs but like the entire thing, frame, motherboards, CPUs, power rig.

            That being said, I haven't looked at the maths when you underclock the cards and get better mining power to electricity ratios yet.

      • whattomine.com

        Cheap PSU for motherboard. Server PSU with breakout board to all your GPUs.

        Better off getting a mining B150 board with like 12 pcie slots and an old G4560 CPU and 4GB RAM for like 100. Then all the rest of the money goes into cards.

  • I'm really looking forward to front panel USB C support becoming commonplace.

  • AMD is so much cheaper once you factor in the cost of a motherboard. I bought a $480 motherboard for my 9700k just so it would have beefy enough VRMs to OC, but even with that, it still isn't as fast as a 5600x in gaming.