The Gigabyte B860 DS3H is built on the LGA 1851 socket and pairs with the B860 chipset, fitting a standard ATX form factor at 305 × 244 mm with a single CPU socket. It supports easy overclocking and includes dual BIOS for added firmware resilience, along with RGB lighting. The board does not include integrated graphics, an integrated CPU, Wi-Fi, or Bluetooth, and the BIOS reset via clear CMOS is not supported through a dedicated button. Video output is handled through an HDMI 2.1 port, and the board carries a 3-year warranty.
The board supports DDR5 memory across four slots in a dual-channel configuration, with a maximum capacity of 256 GB. Standard RAM speeds top out at 6400 MHz, while overclocked profiles can reach up to 9066 MHz. ECC memory is not supported.
The rear I/O panel offers a practical spread of connectivity, including one USB 3.2 Gen 2 Type-A port, one USB 3.2 Gen 2x2 Type-C port, and four USB 2.0 ports, while USB 3.2 Gen 1, USB 4, Thunderbolt 3, and Thunderbolt 4 are all absent. Display output is covered by an HDMI port and one DisplayPort, with no DVI or VGA connectors present. Networking is handled through a single RJ45 port, and legacy input is supported via one PS/2 port. There are no eSATA ports on this board.
Internal connectivity includes two M.2 sockets and four SATA 3 connectors for storage, while SATA 2 and U.2 sockets are not present, and there is no mSATA connector. Expansion headers allow for two additional USB 3.2 Gen 1 ports and four USB 2.0 ports through panel headers, with two further USB 3.0 ports available via expansion as well. The board provides six fan headers for cooling management and includes a TPM connector for security module support.
The board's expansion layout centers on a single PCIe 5.0 x16 slot as the primary full-bandwidth slot, complemented by four PCIe x1 slots for additional cards. There are no PCIe 2.0, 3.0, or 4.0 x16 slots, and no PCIe x4, x8, or legacy PCI slots are present.
The board provides 7.1-channel audio output supported by three audio connectors on the rear panel. There is no S/PDIF Out port available.
The board supports RAID 0, 1, 5, and 10 configurations, covering a range of performance and redundancy setups. RAID 0+1 is not supported.