Motherboard // MSI
MSI B840 GAMING PLUS WIFI Motherboard
Technical specification
AMD B840 ATX Motherboard for AM5 — 7+2+1 Phase VRM, 6-layer 2oz copper PCB, Wi-Fi 7 (320MHz, 5.8Gbps), 2.5G LAN, USB 10Gbps, Dual PCIe 4.0 M.2, DDR5 8000+ OC, White Design, Ryzen 9000 / 8000 / 7000 Ready.
The MSI B840 GAMING PLUS WIFI is the flagship gaming ATX board on AMD's value B840 chipset — delivering full-speed Wi-Fi 7 (tri-band 320MHz, up to 5.8Gbps, MLO, 4KQAM, BT 5.4), Realtek 2.5G LAN, and a clean white design with black heatsinks. Built on a 7+2+1 Direct Power System with 6-layer 2oz copper PCB and 7W/mK MOSFET thermal pads, it offers USB 10Gbps rear Type-C + Type-A, dual PCIe 4.0 x4 CPU M.2 slots with EZ M.2 Shield Frozr II, DDR5 OC up to 8000+ MT/s — all at a value-friendly B840 price.
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>CPU Support: AMD Ryzen 9000 / 8000 / 7000 Series, Socket AM5
>Power Delivery: 7+2+1 Direct Power System, 1x 8-pin CPU connector, Core Boost, Memory Boost, 6-layer 2oz copper PCB, 7W/mK MOSFET thermal pads, choke thermal pads
>Storage: 2x M.2 — M.2_1: PCIe 4.0 x4 (CPU, 2280/2260); M.2_2: PCIe 4.0 x4 (CPU, 22110/2280/2260, Ryzen 9000/7000; PCIe 3.0 x4 Ryzen 8700/8600/8400; PCIe 3.0 x2 Ryzen 8500/8300); 4x SATA 6G — EZ M.2 Shield Frozr II
>Connectivity: Wi-Fi 7 (2.4/5/6GHz, 320MHz, up to 5.8Gbps, MU-MIMO, MLO, 4KQAM, 802.11be), Bluetooth 5.4, Realtek 8125BG 2.5G LAN
>USB: Rear — 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-A, 1x USB 10Gbps Type-C; Front — 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 5Gbps Type-C
>PCIe: PCI_E1: PCIe 4.0 x16 (CPU, Ryzen 9000/7000; x8 Ryzen 8700/8600/8400; x4 Ryzen 8500/8300); PCI_E2/PCI_E3/PCI_E5: PCIe 3.0 x1 (Chipset); PCI_E4: PCIe 3.0 x4 (Chipset)
>Audio: Realtek ALC897, 7.1-CH, Audio Boost, up to 192kHz
| Specification | Details |
|---|---|
| Chipset | AMD B840 |
| Socket | AM5 |
| Form Factor | ATX (304.8 x 243.84 mm), 6-layer 2oz copper PCB |
| Memory | 4x DDR5 UDIMM, up to 256GB; DDR5 8000–5600 (OC) / 5600–4800 (JEDEC) MT/s; 1DPC 1R max 8000+ MT/s / 1DPC 2R max 6400+ MT/s / 2DPC 1R max 6400+ MT/s / 2DPC 2R max 5600+ MT/s OC |
| Memory Standard | AMD EXPO, A-XMP, CUDIMM (bypass mode), Dual Channel, Non-ECC Unbuffered, High-Efficiency Mode |
| PCIe Slots | PCI_E1: PCIe 4.0 x16 (CPU); PCI_E2/PCI_E3/PCI_E5: PCIe 3.0 x1 (Chipset); PCI_E4: PCIe 3.0 x4 (Chipset) — 5 slots total |
| M.2 Slots | M.2_1: PCIe 4.0 x4 (CPU, 2280/2260); M.2_2: PCIe 4.0 x4 (CPU, 22110/2280/2260) — EZ M.2 Shield Frozr II; No PCIe 5.0 M.2 (B840 chipset) |
| SATA | 4x SATA 6G | RAID 0, 1 for M.2 NVMe |
| LAN | Realtek 8125BG 2.5G LAN |
| Wireless | Wi-Fi 7 (2.4/5/6GHz, 320MHz, up to 5.8Gbps, MU-MIMO, MLO, 4KQAM, 802.11be), Bluetooth 5.4 |
| Rear USB | 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-A, 1x USB 10Gbps Type-C |
| Front USB Headers | 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 5Gbps Type-C |
| Video Output | 1x HDMI 2.1 (4K@60Hz) — iGPU only |
| Audio | Realtek ALC897, Audio Boost, 7.1-CH, up to 192kHz |
| Fan Headers | 1x CPU Fan, 1x Combo Fan (Pump/Sys), 4x System Fan, Smart Fan 6 |
| RGB | 2x ARGB V2 headers, 1x RGB header, 4x EZ Debug LED |
| Color Scheme | White with black heatsinks — great for white gaming builds |
| Extras | EZ M.2 Shield Frozr II, EZ M.2 Clip II, EZ PCIe Clip II, EZ Conn header (JAF_1), EZ Antenna, Flash BIOS Button, Clear CMOS Button, Click BIOS 5, Tuning Controller (JDASH), metal backplate |
| OS Support | Windows 11 64-bit |
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Before you buy
Is this genuine, warranted stock?+
Yes — authorised MSI stock with full brand warranty, GST invoice, and serial tracking.
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