Asus Prime B860M-K VS Gigabyte B860M H

At their core, the Asus Prime B860M-K and Gigabyte B860M H are built on identical foundations: both use the LGA 1851 socket with the B860 chipset, share the same Micro-ATX form factor, and lack wireless connectivity — meaning neither supports Wi-Fi or Bluetooth out of the box. For a buyer focused on platform compatibility or planning a wired-only build, these two boards are essentially interchangeable at a glance.

The differences emerge in usability and aesthetics. The Prime B860M-K includes RGB lighting and, more practically, supports easy BIOS reset — a real convenience during initial system builds or troubleshooting, since it lets users recover from a bad overclock or failed flash without needing a spare CPU or display. The B860M H offers neither of these, which is a minor but tangible step down in builder-friendliness. Both boards do share dual BIOS, which provides a hardware-level safety net for firmware corruption regardless of the easy-reset feature. The Prime B860M-K is also slightly taller at 222 mm versus the B860M H's 215 mm, though both share the same 244 mm width — a negligible difference for most cases.

On balance, the Asus Prime B860M-K holds a clear edge in this category. The easy BIOS reset capability is a practical quality-of-life advantage that matters most to builders who tinker with settings, and the addition of RGB lighting gives it broader appeal for users who care about aesthetics — all while sharing the same platform, warranty period, and core feature set as the Gigabyte.

Both the Asus Prime B860M-K and the Gigabyte B860M H have identical memory specifications. Each motherboard supports a maximum memory amount of 128GB, with 2 memory slots available for installation. Both boards support DDR5 memory and are capable of overclocking RAM speeds up to 8800 MHz. Additionally, both motherboards use dual-channel memory configuration and do not support ECC memory.

Since the specifications for memory are identical across both models, there is no difference in performance or capacity between the two for this group.

The Asus Prime B860M-K and the Gigabyte B860M H differ in their USB and display ports. The Asus model includes one USB 3.2 Gen 2 port (USB-A), two USB 3.2 Gen 1 ports (USB-A), and three USB 2.0 ports. It also supports one DisplayPort output and has a USB Type-C port. In contrast, the Gigabyte board features four USB 3.2 Gen 1 ports (USB-A) and two USB 2.0 ports but lacks any USB Type-C ports. Both motherboards support HDMI output, but the Asus board has a DisplayPort output, while the Gigabyte board does not.

Both motherboards come with one RJ45 port for Ethernet connectivity, one PS/2 port for legacy peripherals, and no eSATA, DVI, or VGA connectors. The Asus Prime B860M-K has an advantage in offering one USB 3.2 Gen 2 port (USB-A) and DisplayPort, while the Gigabyte B860M H offers more USB 3.2 Gen 1 ports but lacks the USB Type-C port.

Neither motherboard supports USB 4, Thunderbolt, or VGA connectors, and both lack USB 3.2 Gen 2x2 ports and 40Gbps USB ports. The lack of USB Type-C on the Gigabyte board is a notable difference from the Asus board.

The Asus Prime B860M-K and the Gigabyte B860M H offer identical connector configurations. Both motherboards provide 2 USB 3.2 Gen 1 ports (through expansion), 4 USB 2.0 ports (through expansion), and 2 USB 3.0 ports (through expansion). They also feature 4 SATA 3 connectors and 3 fan headers. Additionally, both motherboards are equipped with 2 M.2 sockets and have a TPM connector. Neither board includes U.2 sockets, mSATA connectors, or SATA 2 connectors.

Since all specifications in this group are identical for both models, there is no difference in terms of available connectors or expandability.

The Asus Prime B860M-K and the Gigabyte B860M H have different configurations when it comes to expansion slots. The Asus board has one PCIe 4.0 x16 slot and two PCIe x1 slots, while the Gigabyte board has one PCIe 5.0 x16 slot and one PCIe x1 slot. Neither of the two motherboards includes PCIe 3.0 x16, PCIe 2.0 x16, PCIe x4, PCIe x8 slots, or PCI slots.

These differences in PCIe x16 slots are the primary distinction: the Asus board uses PCIe 4.0, while the Gigabyte board uses PCIe 5.0. Both motherboards have the same number of PCIe x1 slots, though the Asus board provides an extra PCIe x1 slot compared to the Gigabyte model.

Overall, the expansion slot layout varies slightly between the two, with the Asus Prime B860M-K offering PCIe 4.0, two PCIe x1 slots, and no higher-speed x16 support. The Gigabyte B860M H, on the other hand, features a PCIe 5.0 x16 slot, one PCIe x1 slot, and lacks PCIe 4.0 or any other PCIe x16 options.

Both the Asus Prime B860M-K and the Gigabyte B860M H offer the same audio features. Both motherboards support 7.1 audio channels and have 3 audio connectors. Neither motherboard includes an S/PDIF Out port.

With identical audio specifications, there are no differences in terms of audio capabilities between these two models.

Both the Asus Prime B860M-K and the Gigabyte B860M H support the same RAID configurations. They both offer support for RAID 1, RAID 10 (1+0), RAID 5, and RAID 0. Neither motherboard supports RAID 0+1.

With identical RAID support features, there are no differences in terms of storage functionality between the two models.