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The ASUS Prime TRX40-PRO S is a full ATX motherboard for AMD's third-generation Ryzen Threadripper chips on the sTRX4 socket. It is a stripped-down, value-focused version of the Prime TRX40-Pro: the same 16-power-stage VRM, eight SATA ports, three M.2 slots and PCIe 4.0 x16 lanes, but without the Pro's 2.5Gb Ethernet and with a simpler audio codec. It suits builders who need Threadripper's 64 PCIe lanes and quad-channel DDR4 for rendering, simulation or multi-GPU work and do not want to pay for workstation extras. Against pricier TRX40 boards it gives up Wi-Fi, 10Gb LAN and premium audio, but keeps the core platform intact.
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Lowest price we've seen: $494.87 on Nov 10 at Newegg. Tracked across 1 store since Nov 10.
Owners of the Prime TRX40-Pro S generally report stable operation with high-core Threadripper CPUs and praise the power delivery and storage options for the money. Criticisms centre on the plain networking and audio and on the board's size and sparse accessory set.
