Filogic 820 / MT7981
The MediaTek Filogic 820 is the entry Wi-Fi 6 SoC in the Filogic line. The silicon is MT7981 / MT7981B: dual Cortex-A53 cores at 1.3 GHz, with 2.5 GbE and 1 GbE networking and a companion Wi-Fi 6 radio such as the MT7976C. It is the chip on the official OpenWrt One reference router.
General Specifications
Specs
| SoC | Filogic 820 / MT7981 |
|---|---|
| CPU | 2× Arm Cortex-A53 @ 1.3 GHz |
| RAM | DDR3 / DDR4 |
| Storage | SPI-NAND, SPI-NOR, eMMC, SD |
| Wi-Fi | Companion MT7976-class Wi-Fi 6 Typical AX3000: 2×2 2.4 GHz + 3×3 5 GHz |
| Ethernet | 2.5 GbE + 1 GbE |
| I/O | PCIe (NVMe on OpenWrt One), USB, UART, GPIO |
| GPU | n/a |
OpenWrt One reference
The OpenWrt One pairs MT7981B with 1 GB DDR4, dual flash (SPI-NAND + SPI-NOR) for recovery, 2.5 GbE + 1 GbE, MT7976C Wi-Fi 6, M.2 NVMe, and a MikroBUS expansion socket.
Variant Differences:
- MT7981 / MT7981B: Dual-core Filogic 820. Common on AX3000-class routers (Xiaomi AX3000T, GL.iNet GL-MT3000, Cudy WR3000, and others) and the OpenWrt One.
- MT7986 / Filogic 830: Related higher-tier Wi-Fi 6 SoC with four Cortex-A53 cores; not listed separately on this page.
Linux Support
Mainline / OpenWrt
- Fully supported in OpenWrt
mediatek/filogic - OpenWrt One is an official OpenWrt project board
Resources
Boards with Filogic 820
List of boards: