ASRock
ASRock B850M Pro RS Micro-ATX AM5 Motherboard
Bottom line: The ASRock B850M Pro RS Micro-ATX AM5 Motherboard is a specs-and-price decision rather than a crowd-consensus one in the motherboards category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
Pros & Cons
Pros
- ✓ Backed by ASRock's warranty and support channels
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
Manufacturer description
ASRock B850M Pro RS Micro-ATX AM5 Motherboard, AMD Ryzen 9000/8000/7000 Support, DDR5 8000+(OC), PCIe 5.0, WiFi 6E, 2.5G LAN, USB 3.2 Gen2 Type-C
SpecPicks Verdict
SpecPicks scored ASRock B850M Pro RS Micro-ATX AM5 Motherboard using a rating × review-volume × price-fit model applied to published specs and reviews across the motherboards category. ASRock's motherboards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for motherboards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Next-Gen AMD AM5 Platform: Supports AMD Ryzen 9000, 8000, and 7000 Series processors, delivering exceptional performance for gaming and productivity
- Enhanced Power Design: 8+2+1 phase power design with Dr.MOS technology ensures stable power delivery for VCore, SOC, and MISC components
- Advanced Memory Support: Four DDR5 DIMM slots support dual-channel configurations and overclocked speeds up to 8000+ (OC) for superior performance
- PCIe 5.0 Ready: Features one PCIe 5.0 x16 slot for next-gen graphics cards and one Blazing M.2 (PCIe Gen5x4) slot for ultra-fast NVMe storage
- Comprehensive Storage Options: Includes two additional Hyper M.2 (PCIe Gen4x4) slots and four SATA3 ports for expanded storage capacity
- WiFi 6E Ready: Includes M.2 Key E slot for easy installation of WiFi 6E and Bluetooth modules (sold separately) for wireless connectivity
Full Specifications
| Brand | ASRock |
|---|---|
| Weight | 2.5g |
| Platform | Windows 11 |
| CPU Model | Ryzen 9 |
| CPU Socket | Socket AM5 |
| Model Name | B850M PRO RS |
| Unit Count | 1 Count |
| Chipset Type | AMD B850 |
| Connectivity | Bluetooth, USB, WiFi |
| Model Number | B850M PRO RS |
| WiFi 6E Ready | Includes M.2 Key E slot for easy installation of WiFi 6E and Bluetooth modules (sold separately) for wireless connectivity |
| Chipset Family | AMD |
| PCIe 5.0 Ready | Features one PCIe 5.0 x16 slot for next-gen graphics cards and one Blazing M.2 (PCIe Gen5x4) slot for ultra-fast NVMe storage |
| Connection Type | Wireless |
| Mfr Part Number | 90-MXBR60-A0UAYAZ |
| Number of Ports | 24 |
| Total Usb Ports | 17 |
| Processor Socket | Socket AM5 |
| Total PCIe Ports | 2 |
| Total SATA Ports | 1 |
| Full listing title | ASRock B850M Pro RS Micro-ATX AM5 Motherboard, AMD Ryzen 9000/8000/7000 Support, DDR5 8000+(OC), PCIe 5.0, WiFi 6E, 2.5G LAN, USB 3.2 Gen2 Type-C |
Ready to buy?
ASRock B850M Pro RS Micro-ATX AM5 Motherboard, AMD Ryzen 9000/8000/7000 Support, DDR5 8000+(OC), PCIe 5.0, WiFi 6E, 2.5G LAN, USB 3.2 Gen2 Type-C is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
Related Motherboards
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best 1440p Gaming GPUs in 2026
- How to Build a Windows 98 Retro PC in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- Best Retro Handhelds in 2026 — From $35 to $500
More reviews from the SpecPicks archive
Browse all reviews →- Sound Blaster Audigy FX Deep Dive: Is It Worth It for a 2003 WinXP Period-Correct Gaming Build?
- Prime Day 2026: Gaming Monitor and Logitech Peripheral Deals to Watch
- HyperX QuadCast 2 vs Blue Yeti: Best USB Mic for Game Streaming in 2026
- RX 9070 XT vs RTX 5080 for a 9800X3D Build (2026)
- Ryzen 7 5800X vs Ryzen 5 5600G for Gaming and Streaming
- MicroPython Now Runs on the Super Nintendo — Here's What That Means
- Ryzen AI Max+ 395 LLM Performance: What to Expect
- Running Qwen3.5/3.6 with NextN MTP on an RTX 3090 Ti
- Windows NT Now Boots on the Nintendo GameCube: What the Homebrew Port Actually Runs
- News: ChatGPT Now Listens and Talks at Once
- Four Frontier Models in Eight Days: What a 12GB GPU Can Actually Run
- Local LLM vs Claude in 2026: What an RTX 3060 12GB Rig Actually Replaces
- Best GPU for 1440p 144Hz Esports in 2026: RTX 3060 Ventus Sweet Spot
- Ryzen 7 5800X3D vs Intel Core i7-14700K for DDR4 Gaming
- Raspberry Pi 4 8GB as a Local LLM Box: What Models Actually Run?
- Raspberry Pi 4 8GB vs Pi Zero W: Which Fits Your First Project?
- IDE and CompactFlash to USB Adapters for Retro PC Drive Imaging: Which to Buy
- Best Gaming CPU for 1440p Builds in 2026
- Beyond LLMs: How Agent Logic Scales Enterprise AI
- 4K Gaming PC Build 2026: Cost, Parts, FPS
- Raspberry Pi OS Moves to Linux 6.18 LTS: What Changes for Pi Builders
- Forza Horizon 6 on Steam Deck: How Well Does It Run?
- Best SATA SSDs for Console and Retro PC Upgrades in 2026
- KOORUI 4K QD-Mini LED vs Samsung Odyssey 4K: Which 27-Inch Wins?
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090