MSI
MSI B840 GAMING PLUS WIFI AMD motherboard
ATX board for AM5 Ryzen 7000, 8000 and 9000 CPUs with DDR5 up to 8000 MT/s, PCIe 4.0 x16, dual M.2 Gen4, Wi-Fi 7, 2.5G LAN and Bluetooth 5.4
- CPU Socket TypeAM5
- CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
- ChipsetAMD B840
- Number of Memory Slots4x288pin (DDR5)
- Memory StandardUp to 8000+ MT/s (OC)
- Maximum Memory Supported256GB
Option B840 GAMING PLUS WIFI
- MAG B850 TOMAHAWK MAX WIFI
- MPG B850 EDGE TI WIFI
- B850 GAMING PLUS WIFI
- PRO B850-P WIFI
- B840 GAMING PLUS WIFI
- PRO B840-P WIFI
- MPG B850I EDGE TI WIFI
- PRO B850-S WIFI6E
- B850 GAMING PLUS WIFI6E
- MAG B850 GAMING PLUS MAX WIFI
- MAG B850 TOMAHAWK MAX WIFI II
取り消し線の付いたバージョンは存在しますが、こちらでは取り扱っていません。
- Supports Ryzen 7000 8000 9000 series processors on AM5 socket
- DDR5 memory up to 8000+ MT/s overclocking with four 288-pin slots
- Wi-Fi 7 with 320MHz channel reaching 5.8Gbps maximum speed
- Two M.2 slots with PCIe 4.0 x4 for 64GB/s bandwidth
- 5Gbps LAN plus Bluetooth 5.4 for fast wired and wireless connectivity
Socket AM5 DDR5 platform
This ATX board pairs the AMD B840 chipset with an AM5 socket for Ryzen 7000, 8000 and 9000 series processors. Four DDR5 slots accept up to 256 GB running at 8000+ MT/s overclocked. One PCIe 4.0 x16 slot, one PCIe 3.0 x16 slot and three PCIe 3.0 x1 slots handle graphics and add-in cards. Two M.2 sockets support PCIe 4.0 x4 storage.
Check CPU cooler clearance and PSU cables
Verify that your AM5 cooler mounting hardware matches the socket pattern. Ensure the power supply provides an 8-pin EPS connector for the CPU and a 24-pin ATX connector for the board. Confirm the case has room for a full-size ATX motherboard and that front-panel headers align with the onboard USB 3.2 Gen 1, USB 2.0 and audio connectors.
Thermals noise and power draw
Extended PWM heatsinks spread heat from the voltage regulators during sustained loads. The EZ M.2 Shield Frozr II covers both M.2 drives without tools, helping keep storage temperatures steady. A 2.5 Gbps LAN port and Wi-Fi 7 with 320 MHz channels add minimal extra heat. Fan headers let you tune curves for quiet operation at idle and stronger airflow under load.
特長
- Supports Ryzen 7000 8000 9000 series processors on AM5 socket
- DDR5 memory up to 8000+ MT/s overclocking with four 288-pin slots
- Wi-Fi 7 with 320MHz channel reaching 5.8Gbps maximum speed
- Two M.2 slots with PCIe 4.0 x4 for 64GB/s bandwidth
- 5Gbps LAN plus Bluetooth 5.4 for fast wired and wireless connectivity
仕様
| Brand | MSI |
|---|---|
| Model | B840 GAMING PLUS WIFI |
| CPU Socket Type | AM5 |
| CPU Type | Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series |
| Chipset | AMD B840 |
| Number of Memory Slots | 4x288pin (DDR5) |
| Memory Standard | Up to 8000+ MT/s (OC) |
| Maximum Memory Supported | 256GB |
| Channel Supported | Dual Channel |
| PCI Express 4.0 x16 | 1 x PCI Express 4.0 x16 |
| PCI Express 3.0 x16 | 1 x PCI Express 3.0 x16 |
| PCI Express x1 | 3 x PCI Express 3.0 x1 |
| Serial ATA (SATA) | 4 x SATA 6Gb/s |
| M.2 | 2 x M.2 (Support PCIe 4.0 x4) |
| Audio Chipset | Realtek ALC897 |
| Audio Channels | 8 Channels |
| LAN Chipset | Realtek 8125D |
| Max LAN Speed | 2.5Gbps |
| Wireless LAN | Wi-Fi 802.11 be |
| Bluetooth | Bluetooth 5.4 |
| Back I/O Ports | 1 x Clear CMOS Button / 1 x Flash BIOS Button / 1 x HDMI / 1 x LAN (RJ45) / 1 x USB 3.2 Gen 2 Type-A / 2 x Antenna Bracket / 2 x USB 3.2 Gen 1 Type-A / 3 x Audio Jacks / 4 x USB 2.0/1.1 |
| Form Factor | ATX |
| 配送重量 | 1.61 kg |
| 梱包サイズ | 342 × 268 × 70 mm |
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この商品に関する質問
Does the MSI B840 GAMING PLUS WIFI include mounting screws for the two M.2 slots, or must they be purchased separately?
The board uses a tool-less EZ M.2 Shield Frozr II design that secures M.2 drives without separate screws. Standard ATX case standoffs and I/O shield are required but not supplied.
With four DDR5 slots supporting up to 8000+ MT/s (OC), which memory configuration gives the best balance of capacity and speed?
Populating two slots with a matched DDR5 kit lets the memory controller reach the highest overclocked frequencies; filling all four slots to 256 GB typically lowers the stable MT/s.
The product page quotes a Wi-Fi 7 peak of 5.8 Gbps — what throughput should I expect when the router is one room away?
Real-world throughput depends on channel width, interference and client capability; the 320 MHz channel and 2.5 Gbps LAN port ensure the wired link will not bottleneck the wireless connection.
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