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ASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX Motherboard vs ASUS Prime X870-P WiFi AMD AM5 X870 ATX Motherboard 14+2+1 80A DrMOS Power Stage

Updated August 2026The ASUS Prime X870-P WiFi offers superior features and performance compared to the B840-PLUS, making it the better choice for high-end builds.

The ASUS Prime X870-P WiFi offers superior features and performance compared to the B840-PLUS, making it the better choice for high-end builds.

Why ASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX Motherboard is better

price

B840-PLUS is significantly cheaper at C$153.44

DIY features

B840-PLUS has user-friendly features for builders

RGB lighting

B840-PLUS includes ASUS-exclusive Aura Sync RGB lighting

Why ASUS Prime X870-P WiFi AMD AM5 X870 ATX Motherboard 14+2+1 80A DrMOS Power Stage is better

power delivery

X870-P has a 14+2+1 power stage with 80A DrMOS

connectivity

X870-P features Wi-Fi 7 and PCIe 5.0

cooling solutions

X870-P has advanced cooling with large VRM heatsink

Overall score

ASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX Motherboard
65
ASUS Prime X870-P WiFi AMD AM5 X870 ATX Motherboard 14+2+1 80A DrMOS Power Stage
85

Specifications

SpecASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX MotherboardASUS Prime X870-P WiFi AMD AM5 X870 ATX Motherboard 14+2+1 80A DrMOS Power Stage
SocketAM5AM5
PCIe Version4.05.0
Wi-Fi6E7
Power Stages6-layer14+2+1
Cooling TechVRM & M.2 heatsinksLarge VRM & Dual M.2 heatsinks

Dimension comparison

ASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX MotherboardASUS Prime X870-P WiFi AMD AM5 X870 ATX Motherboard 14+2+1 80A DrMOS Power Stage

Overview

The ASUS Prime B840-PLUS WiFi and the ASUS Prime X870-P WiFi are two high-performance ATX motherboards designed for AMD's latest AM5 processors. The B840-PLUS is priced at C$153.44, while the X870-P comes at a significantly higher price of C$339.99. This price difference reflects the advanced features and capabilities of each product, making it essential to evaluate them closely.

Power Delivery

When it comes to power delivery, the ASUS Prime X870-P features a robust 14+2+1 power stage with 80A DrMOS, compared to the B840-PLUS's enhanced power solution with a 6-layer PCB. The advanced power solution of the X870-P is designed for more demanding applications and ensures stable operation even under heavy loads. The B840-PLUS is equipped with alloy chokes and durable capacitors, which provide stable power delivery, but it may not match the raw capability of the X870-P's more complex power architecture.

Connectivity

Connectivity options are notably enhanced in the ASUS Prime X870-P. It features Wi-Fi 7 and a PCIe 5.0 x16 slot, positioning it at the forefront of connectivity technology. In contrast, the B840-PLUS offers Wi-Fi 6E and a PCIe 4.0 x16 slot. The difference in PCIe generations means that the X870-P supports faster data transfer rates and is better suited for high-performance graphics cards and storage solutions. Additionally, the X870-P includes USB4 (40Gbps) Type-C ports, while the B840-PLUS only offers USB 10Gbps Type-A and Type-C ports.

Cooling Solutions

Cooling is a critical aspect of motherboard design, and here the ASUS Prime X870-P excels with its large VRM heatsink and dual M.2 heatsinks. This advanced cooling architecture helps manage heat effectively, especially when paired with high-performance components. The B840-PLUS also provides comprehensive cooling features, including VRM and M.2 heatsinks, but its cooling solutions are less extensive than those of the X870-P. The use of Fan Xpert 4 with AI Cooling II in the X870-P further enhances its cooling capabilities, adapting to system demands for optimal performance.

DIY-Friendly Features

Both motherboards are designed with DIY enthusiasts in mind. The ASUS Prime B840-PLUS includes features such as a pre-mounted I/O shield, BIOS FlashBack, and Q-Antenna, making it user-friendly for builders. The X870-P also boasts a pre-mounted I/O shield and includes M.2 Q-Latch and PCIe Slot Q-Release for easier component installation. While both motherboards cater to DIY users, the X870-P offers a slightly more refined set of tools that simplify the building process, reflecting its higher-end positioning.

AI and Future-Proofing

Both motherboards are designed for advanced AI computing, ready to support demanding applications. The B840-PLUS is marketed as ready for the future of AI computing, which is underscored by its readiness for the latest AMD Ryzen processors. The X870-P also shares this commitment to AI readiness but takes it a step further with its superior power delivery and enhanced connectivity options. This positions the X870-P as a more future-proof option for users looking to harness AI capabilities in their builds.

Software and Customization

Customization features are rich on both motherboards. The ASUS Prime B840-PLUS includes ASUS-exclusive Aura Sync RGB lighting, providing users with the ability to personalize their builds with vibrant lighting effects. On the other hand, the X870-P also supports Aura Sync and offers a more advanced version of ASUS's software suite, including Fan Xpert 4 for improved cooling management. This makes the X870-P not only customizable in terms of aesthetics but also in performance management, appealing to users who prioritize both looks and functionality.

Price Comparison

There is a considerable price disparity between the two motherboards. The ASUS Prime B840-PLUS is priced at C$153.44, making it an economical choice for budget-conscious builders. Conversely, the ASUS Prime X870-P is priced at C$339.99, reflecting its advanced features and capabilities. This significant difference means that while the B840-PLUS offers great value for entry-level or mid-range builds, the X870-P targets high-performance users willing to invest more for cutting-edge technology and features.

Which should you buy?

Choosing between the ASUS Prime B840-PLUS WiFi and the ASUS Prime X870-P WiFi ultimately depends on your specific needs and budget. If you're building a more budget-friendly system with solid performance for general use, the B840-PLUS at C$153.44 is an excellent choice. However, if you're looking for a high-end motherboard that offers superior power delivery, cutting-edge connectivity, and advanced cooling solutions, the X870-P at C$339.99 is the clear winner. Your decision should be based on whether you prioritize cost-effectiveness or the latest technology in your PC build.

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ASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX Motherboard vs ASUS Prime X870-P WiFi AMD AM5 X870 ATX Motherboard 14+2+1 80A DrMOS Power Stage | versusfinder