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ASRock
ASRock B850M-X R2.0 AMD motherboard AM5 DDR5 8200+ OC PCIe 5.0 2.5G LAN
Micro-ATX AM5 board with dual-channel DDR5 up to 8200 OC, PCIe 5.0 graphics slot, 2.5 Gbps LAN and USB 3.2 Type-C
- CPU Socket TypeAM5
- CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
- ChipsetAMD B850
- Number of Memory Slots2x288pin (DDR5)
- Maximum Memory Supported128GB
- Channel SupportedDual Channel
- Supports Ryzen 7000, 8000 and 9000 series CPUs on AM5 socket
- Dual-channel DDR5 memory up to 8200 OC with AMD EXPO profiles
- PCIe 5.0 x16 slot plus Gen5 M.2 for high-speed graphics and storage
- 5 Gbps LAN and USB 3.2 Gen1 Type-C for fast wired connectivity
- Micro ATX form factor with 128 GB maximum memory capacity
AM5 DDR5 Micro-ATX board for Ryzen 7000 8000 9000
The ASRock B850M-X R2.0 is a Micro-ATX motherboard built on the AMD B850 chipset with an AM5 socket. It accepts Ryzen 7000, 8000 and 9000 series processors and runs dual-channel DDR5 up to 8200+ OC via AMD EXPO. The board includes one PCIe 5.0 x16 slot, one PCIe 4.0 x16 slot, three legacy PCI slots, dual M.2 sockets, 2.5G LAN and USB 3.2 Type-C ports.
Builders needing PCIe 5.0
This board suits builders who want a PCIe 5.0 graphics slot and DDR5 overclocking headroom in a Micro-ATX form factor. It also fits users who need 2.5G LAN and front-panel USB 3.2 Type-C without paying for a larger ATX platform. Buyers requiring four DDR5 slots, integrated Wi-Fi, extensive RGB lighting or a full-size ATX layout should look at other models.
Dual-channel DDR5 up to 8200+ OC
The memory subsystem tops out at 128 GB across two 288-pin slots running dual-channel DDR5 with AMD EXPO profiles reaching 8200+ OC. That ceiling decides whether the board can feed a given CPU and workload; if a build demands more slots or higher validated speeds, this is not the right part.
Highlights
- Supports Ryzen 7000, 8000 and 9000 series CPUs on AM5 socket
- Dual-channel DDR5 memory up to 8200 OC with AMD EXPO profiles
- PCIe 5.0 x16 slot plus Gen5 M.2 for high-speed graphics and storage
- 5 Gbps LAN and USB 3.2 Gen1 Type-C for fast wired connectivity
- Micro ATX form factor with 128 GB maximum memory capacity
Specifications
| Brand | ASRock |
|---|---|
| Model | B850M-X R2.0 |
| CPU Socket Type | AM5 |
| CPU Type | Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series |
| Chipset | AMD B850 |
| Number of Memory Slots | 2x288pin (DDR5) |
| Maximum Memory Supported | 128GB |
| Channel Supported | Dual Channel |
| Memory Performance Profile | AMD EXPO |
| 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 Slots | 3 x PCI Slots |
| Max LAN Speed | 2.5Gbps |
| Form Factor | Micro ATX |
| LED Lighting | None RGB |
| Windows 11 | Supported |
| Shipping weight | 1.18 kg |
| Package size | 298 × 265 × 61 mm |
Questions about this item
Does the box include any DDR5 modules or a Wi-Fi card, or must they be purchased separately?
The board ships without DDR5 memory or a Wi-Fi module. You will need to buy DDR5 DIMMs and, if you want wireless, a compatible M.2 Key E card separately.
Should I pick a DDR5 kit rated at 8200 MT/s or a slower EXPO kit for this board?
The board supports DDR5 up to 8200+ MT/s when overclocked via AMD EXPO. A kit rated at 8200 MT/s will run at that speed with an EXPO profile; slower EXPO kits will run at their rated speed and are easier to stabilise.
What does the PCIe 5.0 x16 slot actually deliver when a Ryzen 9000 CPU is installed?
With a Ryzen 9000 series processor the primary x16 slot operates at PCIe 5.0, giving a graphics card or Gen5 SSD the full 5.0 bandwidth.
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