ASUS PRIME B840M-A WIFI-CSM 90MB1J20-MVAAYC AMD motherboard
- AM5
- Ryzen 7000 Series /…
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ASUS
An AM5 ATX board with 16+2+2 power stages, DDR5 up to 7200, WiFi 7, 2.5 Gb Ethernet, four M.2 slots and 19 USB ports including a 20 Gbps Type-C front connector
Option ROG STRIX B850-F GAMING WIFI
Les versions barrées existent, mais ne sont pas disponibles ici.
This ATX motherboard uses the AM5 socket and AMD B850 chipset to support Ryzen 9000, 8000 and 7000 Series processors. A 16+2+2 power stage design rated for 80A per stage with dual ProCool connectors delivers stable current for multi-core workloads. Integrated heatsinks and a high-conductivity thermal pad manage heat across the VRM and M.2 areas.
Four DDR5 slots accept up to 192 GB in dual-channel mode at speeds from 5000 to 7200 MT/s. AMD EXPO profiles and ASUS Enhanced Memory Profile (AEMP) simplify overclocking and optimisation. ECC un-buffered modules are supported for data integrity. The board runs out of headroom when all four slots are populated at the highest frequencies, where signal integrity may limit stability.
Onboard WiFi 7 (802.11be) and Intel 2.5 Gb Ethernet provide high-throughput, low-latency networking enhanced by AI Networking II. Rear I/O includes 19 USB ports, one front-panel USB 20 Gbps Type-C connector and four USB 10 Gbps ports. HDMI output and Realtek ALC4080 audio complete the connectivity. Aura Sync lighting control is included for system-wide RGB coordination.
| Brand | ASUS |
|---|---|
| Model | ROG STRIX B850-F GAMING WIFI |
| Part Number | 90MB1J70-M0AAY0 |
| CPU Socket Type | AM5 |
| CPU Type | Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series |
| Chipset | AMD B850 |
| Number of Memory Slots | 4x288pin (DDR5) |
| Memory Standard | DDR5 5000 / DDR5 5200 / DDR5 5400 / DDR5 5600 / DDR5 5800 / DDR5 6000 / DDR5 6200 / DDR5 6400 / DDR5 6600 / DDR5 6800 / DDR5 7000 / DDR5 7200 |
| Maximum Memory Supported | 192GB |
| Channel Supported | Dual Channel |
| Memory Performance Profile | AMD EXPO |
| ECC Supported | Yes |
| Buffer Supported | Un-buffered |
| Memory Feature | Dual channel memory architecture Supports AMD Extended Profiles for Overclocking (EXPO) ASUS Enhanced Memory Profile (AEMP) |
| PCI Express 5.0 x16 | AMD Ryzen 9000 & 7000 Series Desktop Processors - 1 x PCIe 5.0 x16 slot with Q-Release Slim AMD Ryzen 8000 Series Desktop Processors - 1 x PCIe 5.0 x16 slot with Q-Rlease Slim (supports PCIe 4.0 x8 or x4 mode)* |
| PCI Express 4.0 x16 | 1 x PCIe 4.0 x16 slot (supports x4 mode)** * Specifications vary by CPU types. ** PCIEX16(G4) slot (supports x4 mode) from AMD B850 Chipset shares bandwidth with M.2_3 |
| Serial ATA (SATA) | 2 x SATA 6Gb/s |
| M.2 | AMD Ryzen 7000 & 9000 Series Desktop Processors M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 5.0x4 mode) M.2_2 (Key M), type 2280/22110 (supports PCIe 5.0 x4 mode) AMD Ryzen 8000 Series Desktop Processors M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 4.0x4 mode) M.2_2 (Key M), type 2280/22110 (supports PCIe 4.0 x4/x2 mode) AMD B850 Chipset M.2_3 (Key M), type 2280 (supports PCIe 4.0 x4)** M.2_4 (Key M), type 2280 (supports PCIe 4.0 x4) ** M.2_3 slot shares bandwidth with PCIEX16(G4). When PCIEX16(G4) slot is operating, M.2_3 will be disabled. |
| SATA RAID | 0/1/5/10 |
| Audio Chipset | Realtek ALC4080 |
| Audio Channels | ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4080* - Impedance sense for front and rear headphone outputs - Supports: Jack-detection, Multi-streaming, Front Panel MIC Jack-retasking - High quality 120 dB SNR stereo playback output and 110 dB SNR recording input - Supports up to 32-Bit/384 kHz playback on front panel Audio Features - SupremeFX Shielding Technology - Savitech SV3H712 AMP - Rear optical S/PDIF out port - Premium audio capacitors - Audio cover |
| Max LAN Speed | 2.5Gbps |
| Wireless LAN | Wi-Fi 802.11 be |
| Bluetooth | Bluetooth 5.4 |
| Back I/O Ports | 1 x USB 20Gbps port (1 x USB Type-C) 3 x USB 10Gbps ports (2 x Type-A + 1 x USB Type-C) 4 x USB 5Gbps ports (4 x Type-A) 4 x USB 2.0 ports (4 x Type-A) 1 x DisplayPort 1 x HDMI port 1 x Wi-Fi module 1 x Intel 2.5Gb Ethernet port 2 x Audio jacks 1 x Optical S/PDIF out port 1 x BIOS FlashBack button 1 x Clear CMOS button |
| Onboard USB | 1 x USB 10Gbps connector (supports USB Type-C) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports |
| Other Connectors | Fan and Cooling Related 1 x 4-pin CPU Fan header 1 x 4-pin CPU OPT Fan header 1 x 4-pin AIO Pump header 4 x 4-pin Chassis Fan headers Miscellaneous 3 x Addressable Gen 2 headers 1 x CPU Over voltage jumper 1 x Front Panel Audio header (F_AUDIO) 1 x Power button 1 x 10-1 pin Front System Panel header 1 x Thermal Sensor header 1 x Thunderbolt (USB4) header |
| Form Factor | ATX |
| Dimensions (W x L) | 12.0" x 9.6" |
| Power Pin | 1 x 24-pin Main Power connector 2 x 8-pin +12V CPU Power connector |
| BIOS Feature | 256 Mb Flash ROM, UEFI AMI BIOS |
| Software | ROG Exclusive Software - ROG CPU-Z - Dolby Atmos ASUS Exclusive Software Armoury Crate - AIDA64 Extreme (60 days free trial) - Aura Creator - Aura Sync - Fan Xpert 4 - GameFirst - HWiNFO - Power Saving ASUS DriverHub ASUS GlideX TurboV Core Adobe Creative Cloud (Free Trial) Norton 360 for Gamers (60 Days Free Trial) WinRAR (40 Days Free Trial) UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode - ASUS MyHotkey |
| Windows 11 | Supported |
| Features | Extreme Engine Digi+ - 5K Black metallic capacitors ASUS Q-Design - M.2 Q-Latch - M.2 Q-Release - M.2 Q-Slide - PCIe Slot Q-Release Slim (with PCIe SafeSlot) - Q-Antenna - Q-Dashboard - Q-DIMM - Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green]) - Q-Slot ASUS Thermal Solution - M.2 heatsink backplate - M.2 heatsink ASUS EZ DIY - BIOS FlashBack button - BIOS FlashBack LED - Clear CMOS button - ProCool - Pre-mounted I/O shield - SafeSlot - SafeDIMM Aura Sync - Addressable Gen 2 headers |
| Package Contents | Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x ASUS WiFi Q-Antenna 1 x Cable ties package 1 x M.2 Q-Latch package 1 x M.2 Q-Slide package 1 x ROG key chain 1 x ROG Strix stickers 4 x M.2 rubbers Documentation 1 x Quick start guide |
| Poids d’expédition | 2.25 kg |
| Dimensions du colis | 353 × 273 × 68 mm |
Autres versions de ce modèle
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Yes, with Ryzen 9000 and 7000 series CPUs the primary slot operates at PCIe 5.0 x16 and includes Q-Release Slim for easy graphics card removal.
Four M.2 slots are available; the top two support PCIe 5.0 x4 with Ryzen 9000 and 7000 series, while the lower pair run at PCIe 4.0 and all include substantial heatsinks.
The board validates DDR5 up to 7200 MT/s via AMD EXPO and AEMP, supports up to 192 GB across four slots, and runs un-buffered ECC modules in dual-channel mode.
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