ASUS PRIME B840-PLUS WIFI AMD B840 ATX Motherboard DDR5
ASUS
ASUS PRIME B840-PLUS WIFI AMD B840 ATX Motherboard DDR5
The ASUS PRIME B840-PLUS WIFI is an AMD B840 ATX motherboard designed for DIY builders and users running AMD Ryzen 9000 series processors. It combines stable power delivery, comprehensive cooling, and modern connectivity including Wi-Fi 6E and PCIe 4.0 storage to support both everyday computing and AI-ready workloads.
Why this product
8+2+1 phase power design with discrete MOSFETs
Dedicated power stages ensure stable voltage delivery to the CPU and chipset, maintaining performance during sustained workloads.
Wi-Fi 6E and 2.5Gb Ethernet
Dual wireless and wired connectivity options deliver faster data transfers and lower-latency connections for gaming, streaming and work.
Three M.2 slots with PCIe 4.0 support
Two slots reach 64 Gbps for rapid OS and application boot times; the third slot supports PCIe 3.0 for additional storage flexibility.
Dual VRM heatsinks and hybrid fan headers
Integrated thermal management and flexible fan control keep the board and CPU stable during intense tasks or overclocking.
Advanced AI PC-ready and CEC Tier II certified
Firmware and architecture align with emerging AI application workloads and environmental efficiency standards.
- ChipsetAMD B840
- SocketAM5 (LGA 1718)
- Form FactorATX
- Memory TypeDDR5 up to 8000 MHz
- M.2 Slots3 (2x PCIe 4.0, 1x PCIe 3.0)
- Warranty3 Years
- SKUASU-2740
- EAN4711387797273
- Works with all AMD Ryzen 9000 series processors in Socket AM5 (LGA 1718).
- Supports DDR5 memory up to 8000 MHz across four DIMM slots.
- Runs Windows 11 and Windows 10 64-bit operating systems.
- Features USB 10Gbps Type-A and Type-C ports, DisplayPort and HDMI video outputs.
- Two of three M.2 slots support PCIe 4.0 at 64 Gbps; the third is PCIe 3.0, so storage speed varies by slot.
Best for
- AMD Ryzen 9000 builders wanting stable DDR5 platform
- Users prioritising modern connectivity over budget constraints
- Workloads demanding multiple high-speed NVMe drives
- AI-ready systems requiring certified platform infrastructure
Trade-offs
- Intel processor users. Socket AM5 is AMD-only; this board does not support Intel CPUs.
- Budget-first builders. Premium features like Wi-Fi 6E and five PCIe 4.0 slots add cost versus entry-level B840 boards.
- Compact builds. ATX form factor requires a full-size case; micro-ATX or mini-ITX variants are not available.
- DDR4 systems. This board supports DDR5 memory only; DDR4 cannot be used.
General
| Brand | ASUS |
|---|
Networking
| Wireless | Wi-Fi 6E |
|---|---|
| Wired Ethernet | Realtek 2.5Gb |
| Manageability | WOL by PME, PXE |
Performance
| Power Delivery | 8+2+1 phase digital with discrete MOSFETs |
|---|---|
| Memory Slots | 4 DDR5 |
| Memory Speed | Up to 8000 MHz |
| PCIe Slots | 5x PCIe 4.0 |
| M.2 Slot 1 & 2 | PCIe 4.0, up to 64 Gbps |
| M.2 Slot 3 | PCIe 3.0 |
Ports & power
| Rear USB | 10Gbps Type-A and Type-C |
|---|---|
| Video Output | DisplayPort, HDMI |
| RGB | Aura Sync RGB |
| BIOS | 256 Mb Flash ROM, UEFI AMI, BIOS FlashBack |
Physical
| Form Factor | ATX |
|---|---|
| Thermal Design | Dual VRM heatsinks, thermal pads, hybrid fan headers |
| Warranty | 3 Years |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.