ASRock B850 Pro RS Wi-Fi Review: The Budget Motherboard That Nails AM5 Performance

With the B850 Pro RS Wi-Fi, ASRock delivers an affordable AM5 platform. This ATX motherboard features a sporty design while promising everything essential to meet gamers’ needs.

Its $160 price positioning is appealing, but it does come with compromises. Tech2Geek tested it with a Ryzen 9 9950X3D and a GeForce RTX 4090. It has been evaluated in different scenarios, from office productivity to gaming.

In real use, does this B850 Pro RS Wi-Fi fulfill its mission? Are the performance numbers convincing? Does its hardware allow users to take advantage of the latest features? And, lastly, does its overall value make it a strong “price-to-performance” option?

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Buy ASRock B850 Pro Motherboard on Amazon ($159)

B850 Pro RS Wi-Fi

The B850 Pro RS Wi-Fi is an AM5 ATX motherboard from ASRock. It supports multiple generations of Ryzen CPUs, including the Ryzen 7000, 8000, and 9000 series, as well as DDR5-8000 in OC mode. A PCIe 5.0 x16 slot supports the latest AMD and Nvidia GPUs, along with a secondary PCIe x16 slot using PCIe 4.0 and wired in x4. Note that full PCIe 5.0 for the first slot is only available with Ryzen 7000 and 9000. With Ryzen 8000 (Phoenix 1), it drops to PCIe 4.0 x8; with Ryzen 8000 (Phoenix 2), it becomes PCIe 4.0 x4.

PCIe 5.0 is also available on the first M.2 slot, offering PCIe 5.0 x4 bandwidth, while the next two provide PCIe 4.0 x4 and the last one PCIe 3.0 x4. The board also supports SATA 6 Gb/s via four dedicated ports.

Wired networking relies on 2.5G Ethernet (Dragon RTL8125BG), while wireless connectivity includes Wi-Fi 6E and Bluetooth 5.2. In total, it can manage 21 USB ports.

It ships in a white minimalist box. The sporty identity is highlighted with slanted typography, bold text for the “RS WiFi” label, and a photo of the motherboard. The B850 chipset, Ryzen 9000 support, and Polychrome Sync aRGB technology are prominently featured.

The included accessories are minimal: two fixed Wi-Fi antennas (2.4/5/6 GHz), two SATA cables, and a quick installation guide.

Its design is based on a black 8-layer PCB showcasing several matte white aluminum heatsinks. This two-tone look enhances its aggressive styling.

The PCIe 5.0 x4 M.2 slot benefits from a dedicated heatsink with dual thermal pads, but this isn’t the case for all. One of the remaining M.2 slots has no heatsink. Strangely, it’s not the PCIe 3.0 x4 slot but a PCIe 4.0 x4 slot, which typically needs cooling more urgently.

The other two M.2 slots share a single heatsink. An aRGB zone is also integrated here, adding a “dynamic” effect with customizable lighting.

The LGA 1718 socket supports older and new AMD AM5 Ryzen CPUs. It is surrounded by two massive aluminum heatsinks that cool the power delivery system (14 + 2 + 1, SPS 80A for Vcore, SOC, and MISC). There’s no heatpipe between them, but both feature thermal pads to improve heat transfer.

Power delivery uses two 8-pin EPS connectors and a 20+4-pin ATX connector.

This ASRock B850 Pro RS Wi-Fi offers two PCIe x16 slots. The primary reinforced slot is wired x16 and supports PCIe 5.0 when using Ryzen 7000 or 9000 CPUs. The secondary PCIe x16 slot is wired x4 and limited to PCIe 4.0. Note that it shares bandwidth with the M.2_3 slot. If an SSD is installed in M.2_3, this PCIe slot becomes inactive.

For memory, four DIMM slots support up to 256 GB of DDR5. The board supports EXPO profiles and DDR5-8000+ MT/s (OC), right out of the box.

Rear I/O includes two antenna mounts, HDMI out, one USB 3.2 Gen 2 Type-C (10 Gbps), one USB 3.2 Gen 1 Type-C (DP-Alt Mode with DisplayPort 1.4a support), four USB 3.2 Gen 1 Type-A ports, six USB 2.0 ports, RJ-45, audio jacks (line-in / front speaker / microphone) and a BIOS Flashback button.

On the board, there are TPM SPI headers, a power LED, speaker header, one RGB connector, three 3-pin aRGB headers, two PWM headers near the CPU, four PWM fan headers for case fans, and one PWM pump connector for liquid cooling.

USB connectivity includes two USB 2.0 headers (supporting 4 USB 2.0 ports), two USB 3.2 Gen 1 headers (supporting 4 USB 3.2 Gen 1 ports), and a USB-C 3.2 Gen2x2 front-panel port (20 Gbps).

Networking and audio finish the tour. The competitive price helps explain the Wi-Fi 6E + Bluetooth 5.2 module. For wired networking, the board uses Dragon RTL8125BG 2.5G Ethernet. Audio is handled by a common codec—Realtek ALC897—often used on mid-range motherboards. However, users with high-impedance headphones should take note (no DAC functions built into the codec).

Test Method

System Specs

• CPU: Ryzen 9 9950X3D
• Cooling: MasterLiquid 360 Atmos
• RAM: G.Skill Trident Z5 DDR5-6000 CL28 (2 × 16 GB)
• GPU: GeForce RTX 4090
• Storage: Samsung 990 Pro 1 TB SSD
• PSU: NZXT C1500
• OS: Windows 11 25H2 (64-bit)

Benchmarks Used

• PCMark 10
• Procyon Office Productivity
• CrystalDiskMark
• AIDA64 Extreme

Power consumption was measured using a wattmeter, tracking total system demand. Gaming tests were done in 1080p max settings, without Ray Tracing or DLSS.

Tested Games

• Far Cry 6
• Shadow of the Tomb Raider
• Horizon Zero Dawn
• Metro Exodus
• Cyberpunk 2077

Performance indices reference the TUF Gaming B850-BTF WIFI (baseline index = 100). For raw performance numbers, see the full review of the X870E Aorus Elite WIFI, which shares the same foundational platform.

Environmental Performance

Power Consumption

Power is measured directly at the outlet. This represents total system consumption (CPU, GPU, storage, cooling, PSU efficiency).

The Intel Core Ultra 9 285K platform is the most power-hungry under heavy load, ranging from 83 to 839 W. At idle, the AMD B850 / Ryzen 9 9950X3D platform actually consumes more, particularly with ASRock’s board. The B850 Pro RS Wi-Fi uses slightly more energy than ASUS’s TUF Gaming model, partly due to its aRGB lighting.

This measurement was taken using a premium 80 Plus Platinum PSU, so efficiency clearly matters if you want to reduce losses and long-term cost.

Cooling

The motherboard uses several heatsinks placed on the VRMs, PCIe 5.0 M.2 slot, and chipset. After a 10-minute burn test at 100% load on GPU, CPU, RAM, and SSD, these temperatures were logged:

The 360mm AIO easily manages the CPU. The PCIe 5.0 M.2 heatsink keeps our Samsung 990 Pro (PCIe 4.0) under control. However, with a PCIe 5.0 SSD, thermal throttling is likely without strong airflow. VRM and chipset temperatures remain perfectly under control—even in open-air testing.

Gaming Performance

Here are the 1080p framerate results (max settings, no RT, no DLSS, with RTX 4090):

The B850 Pro RS Wi-Fi delivers performance that is 4% behind the TUF Gaming B850-BTF Wi-Fi. The Intel platform trails further, with a global performance index of 74%. In all cases, framerates stay very high (minimum of 155 FPS).

Memory bandwidth and latency (DDR5-6000 CL28) closely match the TUF Gaming board:

• Read: 76.4 GB/s
• Write: 79.3 GB/s
• Latency: 79.9 ns

Interface Performance

Using CrystalDiskMark, we tested different interface speeds. SATA numbers were measured on a Crucial MX100 512 GB SSD, USB with a Gigabyte Vision Drive 1 TB, and internal performance using Corsair MP700 Pro SE 4 TB (PCIe 5.0 x4) and Samsung 990 Pro (PCIe 4.0).

Results:

• PCIe 5.0 M.2: 12.3 GB/s read
• PCIe 4.0 M.2: 7.45 GB/s read
• USB 3.2 Gen 2 external SSD: >1 GB/s
• USB 3.2 Gen2x2 (front panel) should exceed 2 GB/s with a compatible drive
• SATA 6 Gb/s fully saturated
• USB 2.0 struggles at ~45 MB/s max

Overall Platform Performance

PCMark 10 and Procyon benchmarks simulate productivity, creation, and general computing workloads:

Ranking matches the gaming benchmarks:

• TUF Gaming B850-BTF Wi-Fi: index 100
• ASRock B850 Pro RS Wi-Fi: index 97.8
• Intel platform: index 94

In Procyon Office Productivity, the B860 GAMING PLUS Wi-Fi (Core Ultra 9 285K) comes out first, but with only a 1% edge over ASUS’s TUF. The ASRock B850 trails by 1.8%.

Data Transfer Speeds (MB/s)

Conclusion

The ASRock B850 Pro RS Wi-Fi is a solid and well-equipped AM5 motherboard designed to offer a strong balance between performance, connectivity, and aesthetics. Compatible with Ryzen 7000, 8000, and 9000 CPUs, it makes efficient use of PCIe 5.0 and high-speed DDR5 memory. Its connectivity options are generous, including Wi-Fi 6E, 2.5G Ethernet, and USB 3.2 Gen2x2. The black PCB and white heatsinks provide a clean, sporty look, enhanced by subtle customizable aRGB lighting.

Cooling performance is generally convincing, though the absence of a heatsink on a PCIe 4.0 M.2 slot remains questionable. In terms of raw performance, it doesn’t take first place, sitting slightly behind the TUF Gaming B850-BTF Wi-Fi with a 3 to 4% gap. Its higher power consumption weighs slightly on its environmental score over time.

Ultimately, at around $160, it delivers a modern AM5 platform at a fair price. We recommend it for users who do not prioritize overclocking and who want a strong B850 motherboard without needing the best-in-class features or performance.

Affiliate Disclosure: This post may contain affiliate links. If you purchase through these links, we may earn a commission at no additional cost to you. As an Amazon Associate, we earn from qualifying purchases.

Buy ASRock B850 Pro Motherboard on Amazon ($159)