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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
| Platform | AMD |
|---|---|
| Socket | sTR5 |
| Socket | AMD Threadripper PRO 7000 WX-series |
| Chipset | TRX50 |
Platform
| Socket Type | sTR5 |
|---|---|
| Form Factor | E-ATX |
Memory
| Memory Type | DDR5 |
|---|---|
| Memory Slots | 4 |
| Max Memory | 1024 GB |
| Memory Type | 4x DDR5 ECC R-DIMM, quad-channel, up to 1TB |
Expansion & Connectivity
| M.2 Slots | 2 |
|---|---|
| PCIe 5.0 Support | Yes |
| Wi-Fi Onboard | Yes |
Network and audio
| Audio Codec | Realtek codec (model not specified) |
|---|
| Model | TRX50 WS |
|---|---|
| VRM | Not officially disclosed by ASRock |
| Expansion | 5x PCIe 5.0 x16 |
| Connectivity | SlimSAS/MCIO expansion ports |
| Networking | 10GbE + 2.5GbE, Wi-Fi 6E |
| Special Features | 2x 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.
Compare and read more
- ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) vs ASUS ROG Crosshair X870E Extreme (AM5/AMD X870E/E-ATX/Dual 5G+10G LAN/Wi-Fi 7/5-Inch LCD Display)
- ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) vs ASUS Pro WS WRX90E-SAGE SE (sTR5/AMD WRX90/EEB/32 Power-Stage VRM/7x PCIe 5.0 x16)
- ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) vs ASUS ROG Maximus Z890 Extreme (LGA1851/Intel Z890/E-ATX/Six M.2 Slots/Dual 2.5G+10G LAN/Wi-Fi 7)
- ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) vs Gigabyte TRX50 AI TOP (sTR5/AMD TRX50/E-ATX/USB4/AI Workload Tuning)
- ASRock TRX50 WS (sTR5/AMD TRX50/E-ATX/SlimSAS Expansion/5x PCIe 5.0 x16) vs Gigabyte X670E AORUS MASTER (AM5/AMD X670E/E-ATX/Four M.2 Slots/Wi-Fi 6E)
