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ASRock
ASRock B850M Rock WiFi AMD motherboard
Micro-ATX board for AM5 Ryzen CPUs with dual DDR5 slots up to 8200, one PCIe 5.0 x16 slot, two M.2 sockets, 2.5 Gb LAN, Wi-Fi and Bluetooth
- CPU Socket TypeAM5
- ChipsetAMD B850
- Number of Memory Slots2x288pin (DDR5)
- Memory StandardDDR5 8200
- Maximum Memory Supported128GB
- Channel SupportedDual Channel
- Supports Ryzen 9000, 8000 and 7000 series processors with AM5 socket
- Dual-channel DDR5 memory up to 8200 MT/s across two 288-pin slots
- PCIe 5.0 x16 slot for high-bandwidth graphics cards
- Two M.2 sockets supporting PCIe 5.0 x4 and 4.0 x4 storage
- 5 Gbps LAN plus Wi-Fi and Bluetooth connectivity
Micro-ATX AM5 Board with DDR5 8200 Support
The ASRock B850M Rock WiFi is a Micro-ATX motherboard built for AMD Socket AM5 processors. It supports Ryzen 9000, 8000 and 7000 series CPUs with a 6+1+1 Dr.MOS power phase design. Two DDR5 slots handle up to 128GB at 8200 MT/s with EXPO or XMP profiles.
Best for Compact Builds Needing PCIe 5.0 Storage
This board suits builders who want a smaller case without losing a PCIe 5.0 x4 M.2 slot or a PCIe 5.0 x16 graphics slot. It also provides 2.5GbE LAN, Wi-Fi, Bluetooth and 7.1 audio. Users needing four DIMM slots, more PCIe 4.0 x4 M.2 sockets or additional USB 3.2 Gen 2 ports should look at full-size ATX alternatives.
Deciding Factor: Two DDR5 Slots Max 128GB at 8200
The memory subsystem is the key constraint. Only two 288-pin slots are available, limiting total capacity to 128GB in dual-channel mode. If your workload demands four modules or higher aggregate bandwidth, this board will not fit; otherwise the PCIe 5.0 M.2 and x16 slots deliver current-generation speed in a compact layout.
Points forts
- Supports Ryzen 9000, 8000 and 7000 series processors with AM5 socket
- Dual-channel DDR5 memory up to 8200 MT/s across two 288-pin slots
- PCIe 5.0 x16 slot for high-bandwidth graphics cards
- Two M.2 sockets supporting PCIe 5.0 x4 and 4.0 x4 storage
- 5 Gbps LAN plus Wi-Fi and Bluetooth connectivity
Caractéristiques
| Brand | ASRock |
|---|---|
| CPU Socket Type | AM5 |
| Chipset | AMD B850 |
| Number of Memory Slots | 2x288pin (DDR5) |
| Memory Standard | DDR5 8200 |
| Maximum Memory Supported | 128GB |
| Channel Supported | Dual Channel |
| Memory Performance Profile | Intel XMP / AMD EXPO |
| ECC Supported | Yes |
| Buffer Supported | Un-buffered |
| PCI Express 5.0 x16 | 1 x PCI Express 5.0 x16 |
| 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 x16 | 2 x PCI Express x16 |
| PCI Express x4 | 1 x PCI Express x4 |
| Other Slots | 1 x M.2 Socket (Key E) |
| Serial ATA (SATA) | 4 x SATA 6Gb/s |
| M.2 | 2 x M.2 (Support PCIe 5.0 x4 & PCIe 4.0 x4) |
| SATA RAID | 0/1/10 |
| Onboard Video Chipset | AMD RDNA |
| Audio Chipset | Realtek ALC897 |
| Audio Channels | 7.1 Channels |
| LAN Chipset | Realtek RTL8125BG |
| Max LAN Speed | 2.5Gbps |
| Bluetooth | Yes |
| Back I/O Ports | 2 x Antenna Ports, 1 x HDMI, 1 x DisplayPort 1.4, 4 x USB 3.2 Gen1, 2 x USB 2.0, 1 x RJ-45 LAN, 1 x BIOS Flashback Button, 3 x HD Audio Jacks |
| S-Video | No |
| HDMI | 1 x HDMI |
| RJ45 | 1 x RJ45 |
| DisplayPort | 1 x DisplayPort |
| Audio Ports | 3 Ports |
| Onboard USB | 3 x USB 3.2 + 5 x USB 2.0 |
| Form Factor | Micro ATX |
| LED Lighting | RGB |
| Dimensions (W x L) | 9.6" x 8.9" |
| Power Pin | 24 Pin |
| Poids d’expédition | 1.18 kg |
| Dimensions du colis | 300 × 267 × 56 mm |
Questions sur cet article
How loud or hot does the B850M Rock WiFi get with its 6+1+1 Dr.MOS power phases under sustained load?
The 6+1+1 Dr.MOS design delivers efficient power to the CPU, keeping VRM temperatures lower and fan speeds quieter during all-day workloads.
Which DDR5 memory kit do I need to reach the 8200 MT/s EXPO speed on the two 288-pin slots?
Install a two-module DDR5 EXPO kit rated for 8200 MT/s or higher; the board runs dual-channel up to 128 GB total capacity.
Will my existing PCIe 4.0 graphics card and SATA SSDs work in the PCIe 5.0 x16 and four SATA 6 Gb/s ports?
Yes, the PCIe 5.0 x16 slot is backward compatible with PCIe 4.0 cards, and all four SATA ports accept standard SATA drives.
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