Asus Prime B840-Plus WiFi VS Asus TUF Gaming B850M-Plus

Both boards target the AMD AM5 platform, but they diverge in meaningful ways starting with their chipsets and physical footprint. The Prime B840-Plus WiFi uses the B840 chipset and comes in a full ATX form factor (305 × 244 mm), while the TUF Gaming B850M-Plus steps up to the B850 chipset and shrinks into a Micro-ATX footprint (244 × 244 mm). The B850 chipset generally offers more connectivity headroom — additional PCIe lanes and USB bandwidth — which matters if you plan to stack NVMe drives or high-speed peripherals. The ATX size of the Prime, on the other hand, typically translates to more expansion slots and better VRM airflow spacing, advantages that are independent of chipset tier.

The most practical day-to-day differentiator is wireless connectivity. The Prime B840-Plus WiFi includes both Wi-Fi and Bluetooth, while the TUF Gaming B850M-Plus has neither. For a desktop tucked near an Ethernet port this may be irrelevant, but for builds where running a cable is inconvenient — or where Bluetooth peripherals like headsets and controllers are part of the setup — the Prime's built-in wireless is a tangible convenience advantage that would otherwise require an add-in card on the TUF board. The Prime also supports easy BIOS reset, whereas the TUF does not, a small but welcome feature during troubleshooting or after a failed overclock. Both boards share dual BIOS, RGB lighting, HDMI 2.1 output, a 3-year warranty, and overclocking support, so those points are a wash.

In summary, the two boards suit different priorities. The TUF Gaming B850M-Plus holds a chipset advantage and a compact size suited for smaller cases, appealing to builders who want slightly more I/O ceiling in a tighter package and have no need for wireless. The Prime B840-Plus WiFi wins on convenience features — integrated Wi-Fi and Bluetooth, easier BIOS recovery, and a larger PCB with more room for components — making it the stronger all-rounder for typical desktop builds, especially where wireless connectivity matters.

Both the Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850M-Plus support a maximum memory capacity of 192GB. They both feature 4 memory slots and support DDR5 memory, along with dual memory channels. However, there is a difference in their overclocked RAM speeds. The Prime B840-Plus WiFi supports up to 7600 MHz, while the TUF Gaming B850M-Plus can handle a higher overclocked RAM speed of 8000 MHz.

Neither motherboard supports ECC memory, as indicated in the specifications for both products.

The Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850M-Plus both offer a variety of USB ports, but with some differences. The Prime B840-Plus WiFi includes 1 USB 3.2 Gen 2 port (USB-A), 2 USB 3.2 Gen 1 ports (USB-A), and 1 USB 3.2 Gen 2 port (USB-C), whereas the TUF Gaming B850M-Plus offers 3 USB 3.2 Gen 2 ports (USB-A) and 4 USB 3.2 Gen 1 ports (USB-A), but lacks USB 3.2 Gen 2 or USB 3.2 Gen 1 ports (USB-C).

Both motherboards come with 4 USB 2.0 ports and 1 RJ45 Ethernet port. They also both feature HDMI and DisplayPort outputs. However, the TUF Gaming B850M-Plus adds a USB 3.2 Gen 2x2 port, which is absent on the Prime B840-Plus WiFi. Neither product includes Thunderbolt 3 or Thunderbolt 4 ports, and neither has VGA connectors or PS/2 ports.

Both boards support USB Type-C connectivity, but the Prime B840-Plus WiFi offers USB 3.2 Gen 2 and USB-C ports, while the TUF Gaming B850M-Plus provides no USB 3.2 Gen 2 or USB-C ports but still features USB Type-C support in its own form.

The Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850M-Plus have similar connector setups, but with a few key differences. Both motherboards offer 2 USB 3.2 Gen 1 ports and 4 USB 2.0 ports through expansion, along with 4 SATA 3 connectors. They also both feature 2 USB 3.0 ports through expansion and 3 M.2 sockets.

In terms of fan headers, the Prime B840-Plus WiFi has 6, while the TUF Gaming B850M-Plus has 5, giving the Prime model slightly more flexibility for cooling solutions. Additionally, the Prime B840-Plus WiFi includes a TPM connector, which is not available on the TUF Gaming B850M-Plus.

Both motherboards do not include any U.2 or mSATA connectors, and neither has SATA 2 connectors.

The Asus Prime B840-Plus WiFi and Asus TUF Gaming B850M-Plus differ in their expansion slot configurations. The Prime B840-Plus WiFi includes 1 PCIe 4.0 x16 slot and 3 PCIe 3.0 x16 slots, offering a total of 4 PCIe x16 slots. In contrast, the TUF Gaming B850M-Plus features 1 PCIe 5.0 x16 slot and 1 PCIe x1 slot, but no PCIe 3.0 x16 slots. This gives the TUF Gaming board a focus on the newer PCIe 5.0 standard but fewer overall x16 slots for expansion.

Both motherboards have no PCI, PCIe 2.0 x16, PCIe x4, or PCIe x8 slots, keeping the expansion options focused on the higher-speed PCIe slots for the Prime B840-Plus WiFi and a mix of PCIe 5.0 and PCIe x1 for the TUF Gaming B850M-Plus.

Both the Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850M-Plus offer 7.1 audio channels, providing high-quality surround sound support. However, there are differences in their audio features. The Prime B840-Plus WiFi does not have an S/PDIF Out port, while the TUF Gaming B850M-Plus includes this port for digital audio output.

In terms of audio connectors, the Prime B840-Plus WiFi comes with 3 audio connectors, while the TUF Gaming B850M-Plus offers 5 audio connectors, giving it more options for connecting external audio devices.

Both the Asus Prime B840-Plus WiFi and the Asus TUF Gaming B850M-Plus support several RAID configurations, offering similar functionality in terms of data redundancy and performance. Both motherboards support RAID 1, RAID 10 (1+0), RAID 5, and RAID 0, allowing for a range of storage setups.

Neither motherboard supports RAID 0+1, as indicated by both products not having this option available in their specifications. Overall, the RAID support on both boards is identical, providing robust options for users looking to configure their storage arrays.