ASUS Prime X399-A Extended ATX Motherboard
Best price now
$478.80at NeweggChecked Nov 10
Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Prime X399-A is an extended ATX board for AMD's first-generation Ryzen Threadripper chips on the TR4 socket. It stands out for eight DDR4 slots, four PCIe x16 slots with SLI and CrossFire support, and a rare U.2 connector alongside M.2. It suits workstation and enthusiast builders who want quad-channel memory and heavy PCIe expansion without paying for a flagship board. Against pricier X399 boards it gives up some power delivery headroom and fan headers, and it lacks Bluetooth and Wi-Fi, so most owners add a network card.
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Lowest price we've seen: $478.80 on Nov 10 at Newegg. Tracked across 1 store since Nov 10.
Owners of Threadripper builds describe the board as a solid, no-frills base with plenty of memory and PCIe room. Complaints center on the sparse fan headers, missing wireless and the aging TR4 platform.
