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ASRock TRX50 WS motherboard
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ASRock TRX50 WS

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Manufacturer: ASRock Last updated: September 11, 2026

ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) Review

The TRX50 WS is ASRock's workstation offering for Threadripper PRO 7000 WX-series builds, distinguishing itself with SlimSAS and MCIO expansion ports that let professionals add extra M.2 storage or PCIe devices beyond the board's built-in slots.

ASRock does not officially disclose an exact phase count or amperage figure for this board's VRM, though the E-ATX layout and heatsink design are built to sustain the power draw of Threadripper PRO WX-series chips under prolonged multi-threaded workloads. Four DDR5 ECC R-DIMM slots run in quad-channel mode, supporting up to 1TB of total system memory for large-scale workstation applications. Five PCIe 5.0 x16 slots provide extensive expansion capacity, and two onboard PCIe 5.0 M.2 slots are supplemented by SlimSAS/MCIO ports that allow additional M.2 or PCIe devices to be connected via an add-in card, a flexible approach to storage expansion. Dual networking is handled by a 10GbE controller alongside a 2.5GbE port, with integrated Wi-Fi 6E covering wireless needs. The extended-ATX form factor (12x10.9 inches) requires a case built for workstation-class boards. Against the Gigabyte TRX50 AI TOP in this catalog, the TRX50 WS's SlimSAS/MCIO expansion ports give it more flexible storage scaling, while the AI TOP instead focuses its differentiation on USB4 and AI-workload tuning utilities.

Power Delivery and VRM Design

ASRock does not officially disclose an exact phase count or amperage figure for this board's VRM, though the E-ATX layout and heatsink design are built to sustain the power draw of Threadripper PRO WX-series chips under prolonged multi-threaded workloads.

Memory Support

Four DDR5 ECC R-DIMM slots run in quad-channel mode, supporting up to 1TB of total system memory for large-scale workstation applications.

Expansion and Storage

Five PCIe 5.0 x16 slots provide extensive expansion capacity, and two onboard PCIe 5.0 M.2 slots are supplemented by SlimSAS/MCIO ports that allow additional M.2 or PCIe devices to be connected via an add-in card, a flexible approach to storage expansion.

Connectivity

Dual networking is handled by a 10GbE controller alongside a 2.5GbE port, with integrated Wi-Fi 6E covering wireless needs. The extended-ATX form factor (12x10.9 inches) requires a case built for workstation-class boards.

Comparison to Sibling Products

Against the Gigabyte TRX50 AI TOP in this catalog, the TRX50 WS's SlimSAS/MCIO expansion ports give it more flexible storage scaling, while the AI TOP instead focuses its differentiation on USB4 and AI-workload tuning utilities.

Specifications

Platform and CPU compatibility

PlatformAMD
SocketsTR5
SocketAMD Threadripper PRO 7000 WX-series
ChipsetTRX50

Platform

Socket TypesTR5
Form FactorE-ATX

Memory

Memory TypeDDR5
Memory Slots4
Max Memory1024 GB
Memory Type4x DDR5 ECC R-DIMM, quad-channel, up to 1TB

Expansion & Connectivity

M.2 Slots2
PCIe 5.0 SupportYes
Wi-Fi OnboardYes

Network and audio

Audio CodecRealtek codec (model not specified)
ModelTRX50 WS
VRMNot officially disclosed by ASRock
Expansion5x PCIe 5.0 x16
ConnectivitySlimSAS/MCIO expansion ports
Networking10GbE + 2.5GbE, Wi-Fi 6E
Special Features2x PCIe 5.0 M.2 + SlimSAS expansion

Expert Review

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • Workstation builders who want flexible storage expansion via SlimSAS/MCIO add-in cards
  • Threadripper PRO WX-series builds needing quad-channel ECC memory and five PCIe 5.0 slots

Not for

  • Anyone wanting a manufacturer-disclosed exact VRM phase/amperage spec
  • Builds that don't need workstation-class expansion or ECC memory

FAQs

What are the key specifications of the ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16)?

The ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) is a motherboard from ASRock. Key specs: Socket sTR5, Chipset TRX50, VRM Not officially disclosed by ASRock, Memory 4x DDR5 ECC R-DIMM, quad-channel, up to 1TB, Expansion 5x PCIe 5.0 x16.

Will the ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) work with my current setup?

The ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) lists Socket is sTR5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) best suited to?

It suits workstation builders who want flexible storage expansion via slimsas/mcio add-in cards, threadripper pro wx-series builds needing quad-channel ecc memory and five pcie 5.0 slots.

What are the drawbacks of the ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16)?

It is a poor fit for anyone wanting a manufacturer-disclosed exact vrm phase/amperage spec, builds that don't need workstation-class expansion or ecc memory.

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