Asus Prime B840-Plus WiFi VS Asus TUF Gaming B850-Plus WiFi

Both the Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850-Plus WiFi share a strong common foundation: the AM5 socket, full ATX form factor (identical 244 × 305 mm footprint), HDMI 2.1 output, dual BIOS, RGB lighting, overclocking support, and a 3-year warranty. For most builders, these shared traits mean both boards slot into the same cases, support the same AMD processors, and carry the same long-term reliability assurance.

The meaningful separators live in connectivity. The TUF Gaming B850-Plus WiFi pairs its B850 chipset with Wi-Fi 7 (802.11be) support and Bluetooth 5.4, while the Prime B840-Plus WiFi tops out at Wi-Fi 6E and Bluetooth 5.3. In practice, Wi-Fi 7 delivers substantially higher theoretical throughput and lower latency — particularly relevant on congested networks or with multi-link operation — whereas Wi-Fi 6E is already fast enough for most current use cases. Bluetooth 5.4 adds minor improvements in reliability and broadcast efficiency over 5.3, a difference few users will notice day-to-day. The Prime B840-Plus WiFi does hold one practical edge here: it supports easy BIOS reset, which the TUF Gaming B850 does not — a small but genuine convenience advantage during troubleshooting or initial builds.

Overall, the TUF Gaming B850-Plus WiFi has a clear edge in general specs, primarily due to its newer chipset and future-ready Wi-Fi 7 support, making it the stronger long-term investment for users who anticipate upgrading routers or prioritize cutting-edge wireless. The Prime B840-Plus WiFi is competitive for builders who do not need Wi-Fi 7 and who value the added convenience of one-touch BIOS reset.

The Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850-Plus WiFi have identical memory capacities, both supporting a maximum memory amount of 192GB. Both motherboards also feature 4 memory slots, DDR5 memory, and 2 memory channels. The key difference between the two products lies in their overclocked RAM speed: the Prime B840-Plus supports an overclocked RAM speed of 7600 MHz, while the TUF Gaming B850-Plus supports a higher speed of 8000 MHz.

Neither motherboard supports ECC memory, so there is no difference in that regard. Overall, while both motherboards are similar in terms of basic memory specs, the TUF Gaming B850-Plus offers slightly higher overclocking potential with its 8000 MHz RAM speed.

Both products are quite capable in the memory department, with no other significant distinctions apart from the slight difference in overclocked RAM speed.

The Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850-Plus WiFi offer different port configurations, with some overlapping and some distinct features. Both motherboards include one HDMI output and one DisplayPort output, so video connectivity is the same on both. Additionally, both motherboards have one RJ45 port for Ethernet connectivity and support USB Type-C ports. However, the Prime B840-Plus features one USB 3.2 Gen 2 port (USB-A), two USB 3.2 Gen 1 ports (USB-A), and one USB 3.2 Gen 2 port (USB-C), whereas the TUF Gaming B850-Plus has three USB 3.2 Gen 2 ports (USB-A), four USB 3.2 Gen 1 ports (USB-A), but lacks any USB 3.2 Gen 2 ports (USB-C).

In addition, the Prime B840-Plus offers four USB 2.0 ports, while the TUF Gaming B850-Plus provides only two. The TUF Gaming B850-Plus stands out with the inclusion of one USB 3.2 Gen 2x2 port, a feature the Prime B840-Plus does not have. Both motherboards lack USB 4 40Gbps or USB 4 20Gbps ports, as well as Thunderbolt 3 or Thunderbolt 4 ports.

Neither product includes eSATA, DVI, VGA, or PS/2 ports, keeping their connectivity options modern and focused on more recent standards. Overall, the TUF Gaming B850-Plus provides a higher quantity of USB ports and includes a USB 3.2 Gen 2x2 port, which is not available on the Prime B840-Plus.

The Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850-Plus WiFi share several common connectors but also have a key difference. Both motherboards offer the same number of USB 3.2 Gen 1 ports (2), USB 2.0 ports (4), USB 3.0 ports (2 through expansion), SATA 3 connectors (4), fan headers (6), and M.2 sockets (3). Neither board includes U.2 sockets or SATA 2 connectors, and neither has an mSATA connector.

The main difference between the two motherboards lies in the TPM connector: the Prime B840-Plus has a TPM connector, while the TUF Gaming B850-Plus does not. This is the only distinction in the connectors between the two products.

Overall, both products are quite similar in terms of connectivity, with the only significant difference being the inclusion of the TPM connector on the Prime B840-Plus.

The Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850-Plus WiFi offer different configurations for their expansion slots. Both motherboards have one PCIe 4.0 x16 slot, but the TUF Gaming B850-Plus adds a PCIe 5.0 x16 slot, which the Prime B840-Plus lacks. Additionally, the TUF Gaming B850-Plus includes two PCIe x1 slots, while the Prime B840-Plus does not have any PCIe x1 slots.

Neither motherboard has PCI slots, PCIe 2.0 x16 slots, PCIe x4 slots, or PCIe x8 slots. The Prime B840-Plus has three PCIe 3.0 x16 slots, while the TUF Gaming B850-Plus does not include any PCIe 3.0 x16 slots. These differences highlight the TUF Gaming B850-Plus’s inclusion of a PCIe 5.0 x16 slot and additional PCIe x1 slots, whereas the Prime B840-Plus offers more PCIe 3.0 x16 slots.

Overall, the TUF Gaming B850-Plus offers a more modern PCIe configuration with PCIe 5.0 support and extra PCIe x1 slots, while the Prime B840-Plus focuses on more PCIe 3.0 x16 slots.

Both the Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850-Plus WiFi support 7.1 audio channels, offering high-quality sound for immersive experiences. Neither motherboard has an S/PDIF Out port, so users looking for digital audio output will need to find alternative solutions.

The key difference between the two motherboards lies in the number of audio connectors. The Prime B840-Plus provides 3 audio connectors, while the TUF Gaming B850-Plus offers 5 audio connectors, providing more flexibility for connecting various audio devices.

In summary, while both motherboards support the same 7.1 audio channels and lack an S/PDIF Out port, the TUF Gaming B850-Plus stands out with its additional audio connectors, making it more versatile for users needing more audio connections.

Both the Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850-Plus WiFi support the same RAID configurations. Both motherboards support RAID 1, RAID 10 (1+0), RAID 5, and RAID 0, providing flexibility for different storage setups. Neither motherboard supports RAID 0+1, so this option is unavailable on both products.

In summary, the storage features of both motherboards are identical in terms of supported RAID levels, with no significant differences between them.