ASUS ROG STRIX B860-I GAMING WIFI review

The ROG Strix B860-I Gaming WiFi is a Mini-ITX board (6.7 x 6.7 in) for LGA1851 on the Intel B860 chipset. It has two DDR5 DIMM slots, a 128GB ceiling and support for CUDIMM. ASUS lists speeds up to 9066+ MT/s with overclocking, using non-ECC unbuffered memory.

Two DIMM slots keep the memory layout simple. They also cap you at two modules, so capacity planning matters before you buy.

The board has one PCIe 5.0 x16 slot. M.2_1 is PCIe 5.0 x4, attached to the CPU, and takes 2260 and 2280 drives. M.2_2 is PCIe 4.0 x4, attached to the chipset, and takes 2242, 2260 and 2280 drives. Four SATA 6Gb/s ports sit alongside them.

That layout suits a small build with one fast boot drive, a second NVMe drive and a few SATA disks for bulk storage. Large heatsinks cover the VRMs and the topside M.2 slot. One reviewer says the rear metal backplate has no thermal pads touching the PCB.

This is where the board is strongest. The rear panel has eight USB ports: one Thunderbolt 4 USB-C, one 20Gbps USB-C, one 10Gbps Type-A, three 5Gbps Type-A and two USB 2.0 Type-A. A front USB-C header runs at 10Gbps.

Networking is one Intel 2.5GbE port plus Wi-Fi 7 (802.11be) in a 2x2 configuration, with Bluetooth 5.4. With Thunderbolt 4 and a 20Gbps port on the back, fast external storage and docks each have a direct connection. Only one wired port is fitted, so a second Ethernet connection would need something extra.

The board lists 16+2+2 power stages. ASUS describes a 10+1+2+1 power solution, with ten 80A DrMOS for VCCCORE and one 80A DrMOS for VCCGT. Owners call the VRM good, and one reviewer calls it robust.

The thermal picture is less settled. With a Core Ultra 9 285K, TechPowerUp rates PCIe Gen 5 and VRM temperatures as weaker than ASRock and MSI boards. Another review says thermals are excellent under load. If you plan to pair it with the top chip in the socket, those two views are worth weighing. Good airflow over the heatsinks is sensible in a small case either way.

The firmware is a 256 Mb AMI UEFI with EZ Flash and CrashFree BIOS 3. A clear CMOS button sits on the rear I/O. One reviewer calls the UEFI clean and intuitive, and an owner says it accepts a modern keyboard.

TechPowerUp reports that BIOS Flashback is not present. That claim comes from a single outlet, but it appears on two of its pages. Buyers who like to update firmware without a CPU installed should check before ordering.

Memory reports are mixed. One owner says the board never POSTs with two DDR5 sticks, and that a stick in slot B fails while slot A works. A reviewer found some UEFI memory profiles unstable. These are two separate reports and not a confirmed pattern, but they matter on a board with only two DIMM slots.

Armoury Crate draws complaints. An owner calls it very bad, and a reviewer says it can be a pain to install.

Owners call the price fair. One reviewer puts it close to premium B860 options from ASRock, Gigabyte and MSI. The case for it rests on the I/O: Thunderbolt 4, a 20Gbps USB-C port and Wi-Fi 7 together. The case against rests on the missing Flashback and the memory reports.

Look at your memory plan first. With two DIMM slots and a 128GB maximum, you need to be happy with two modules, and the reports of failed boots and unstable memory profiles are worth weighing. Then check your cooling. The VRM thermal findings differ between reviews, so a high-end CPU in a tight case deserves airflow planning. Finally, decide whether you can live without BIOS Flashback and with Armoury Crate's reputation.