AMD · 2025
B840
The B840 is an AMD chipset for AM5 motherboards, released in 2025. It supports DDR5 memory and PCIe 4.0, but does not allow CPU overclocking.
The B840 is a chipset from AMD, introduced on January 6, 2025, for the AM5 platform. It is designed for mainstream systems that do not require CPU overclocking, as this feature is not supported. The chipset provides 8 PCIe 4.0 lanes, 4 SATA III ports, and a variety of USB ports: 2 USB 3.2 Gen 2, 2 USB 3.2 Gen 1, and 6 USB 2.0. It does not include USB 3.2 Gen 2x2 ports. Memory support includes DDR5 with ECC capability. The B840 has a low power consumption with a TDP of 4.5 W. It is intended for use with AMD Ryzen processors on the AM5 socket, offering a balance of connectivity and efficiency for everyday computing.
Specifications
| Socket unverified | AM5 |
|---|---|
| Platform unverified | AM5 |
| TDP unverified | 4.5 W |
| PCIe version unverified | 4.0 |
| Total PCIe lanes (chipset) unverified | 8 |
| Memory support unverified | DDR5 |
| ECC memory support unverified | Yes |
| SATA III ports unverified | 4 |
| USB 3.2 Gen 2x2 ports unverified | 0 |
| USB 3.2 Gen 2 ports unverified | 2 |
| USB 3.2 Gen 1 ports unverified | 2 |
| USB 2.0 ports unverified | 6 |
| CPU overclocking unverified | No |
| Release date unverified | 2025-01-06 |
| Release year unverified | 2025 |