Asus Prime B840-Plus WiFi
Gigabyte B850 Eagle WiFi6E

Asus Prime B840-Plus WiFi Gigabyte B850 Eagle WiFi6E

Overview

Welcome to our in-depth comparison of the Asus Prime B840-Plus WiFi and the Gigabyte B850 Eagle WiFi6E, two AM5 ATX motherboards targeting builders who demand modern connectivity and strong memory performance. Both boards share a solid foundation of DDR5 support, Wi-Fi 6E, and versatile storage options, yet they diverge in key areas such as chipset generation, PCIe slot configuration, and maximum memory capacity. Read on to discover which board best suits your next build.

Common Features

  • Both boards use the AM5 CPU socket.
  • Both boards have an ATX form factor.
  • Wi-Fi is available on both products, supporting Wi-Fi 4, Wi-Fi 5, Wi-Fi 6, and Wi-Fi 6E.
  • Bluetooth 5.3 is present on both products.
  • Both boards feature an HDMI 2.1 output.
  • Overclocking support is available on both products.
  • Both boards have 4 memory slots with DDR5 support across 2 memory channels.
  • ECC memory is not supported on either product.
  • Both boards include 2 USB 3.2 Gen 1 Type-A ports and 4 USB 2.0 ports on the rear.
  • Neither board has USB 3.2 Gen 2x2, USB 4, Thunderbolt 3, or Thunderbolt 4 ports.
  • Both boards provide 2 USB 3.2 Gen 1 ports and 4 USB 2.0 ports through expansion headers.
  • Both boards have 4 SATA 3 connectors, 3 M.2 sockets, and 6 fan headers.
  • A TPM connector is present on both products.
  • Neither board includes a U.2 socket.
  • Both boards deliver 7.1-channel audio with 3 audio connectors.
  • S/PDIF Out is not available on either product.
  • Both boards support RAID 0, RAID 1, RAID 5, and RAID 10, but neither supports RAID 0+1.
  • Neither board has any PCI, PCIe 2.0 x16, PCIe x4, or PCIe x8 slots.

Main Differences

  • The chipset is B840 on Asus Prime B840-Plus WiFi and B850 on Gigabyte B850 Eagle WiFi6E.
  • RGB lighting is present on Asus Prime B840-Plus WiFi but not available on Gigabyte B850 Eagle WiFi6E.
  • Easy BIOS reset is supported on Asus Prime B840-Plus WiFi but not available on Gigabyte B850 Eagle WiFi6E.
  • Maximum memory capacity is 192 GB on Asus Prime B840-Plus WiFi and 256 GB on Gigabyte B850 Eagle WiFi6E.
  • Maximum overclocked RAM speed is 7600 MHz on Asus Prime B840-Plus WiFi and 8200 MHz on Gigabyte B850 Eagle WiFi6E.
  • USB 3.2 Gen 2 Type-A ports number 1 on Asus Prime B840-Plus WiFi and 2 on Gigabyte B850 Eagle WiFi6E.
  • A USB 3.2 Gen 2 Type-C port is present on Asus Prime B840-Plus WiFi but absent on Gigabyte B850 Eagle WiFi6E.
  • A USB 3.2 Gen 1 Type-C port is absent on Asus Prime B840-Plus WiFi but present on Gigabyte B850 Eagle WiFi6E.
  • A PS/2 port is absent on Asus Prime B840-Plus WiFi but present on Gigabyte B850 Eagle WiFi6E.
  • Asus Prime B840-Plus WiFi has 1 PCIe 4.0 x16 slot, while Gigabyte B850 Eagle WiFi6E has none.
  • Gigabyte B850 Eagle WiFi6E has 1 PCIe 5.0 x16 slot, while Asus Prime B840-Plus WiFi has none.
  • Asus Prime B840-Plus WiFi has 3 PCIe 3.0 x16 slots, while Gigabyte B850 Eagle WiFi6E has none.
  • Asus Prime B840-Plus WiFi has no PCIe x1 slots, while Gigabyte B850 Eagle WiFi6E has 3.
Specs Comparison
Asus Prime B840-Plus WiFi

Asus Prime B840-Plus WiFi

Gigabyte B850 Eagle WiFi6E

Gigabyte B850 Eagle WiFi6E

General info:
CPU socket AM5 AM5
chipset B840 B850
form factor ATX ATX
release date January 2025 January 2025
supports Wi-Fi
Wi-Fi version Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax) Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax)
Has Bluetooth
Bluetooth version 5.3 5.3
HDMI version HDMI 2.1 HDMI 2.1
Easy to overclock
has RGB lighting
Easy to reset BIOS
Has dual BIOS
has aptX
CPU sockets 1 1
Has integrated graphics
warranty period 3 years 3 years
height 244 mm 244 mm
width 305 mm 305 mm
Has integrated CPU

Both the Asus Prime B840-Plus WiFi and the Gigabyte B850 Eagle WiFi6E share the same AM5 socket, ATX form factor, and identical dimensions, making them direct platform competitors for AMD Ryzen builds. They also match on wireless connectivity — both support up to Wi-Fi 6E and Bluetooth 5.3 — and both offer HDMI 2.1 output, dual BIOS, and a 3-year warranty. For the everyday builder, these shared traits mean a very similar baseline experience in terms of physical fit, connectivity, and long-term support.

The most meaningful hardware difference lies in the chipset: the Gigabyte uses the newer B850, while the Asus runs on the B840. In AMD's lineup, B850 sits above B840, typically offering more PCIe lanes, broader overclocking support, and greater future-proofing for high-bandwidth peripherals. Both boards are listed as easy to overclock, but B850's architectural headroom gives the Gigabyte a structural edge for users pushing their platform harder. On the other hand, the Asus counters with two usability-focused advantages: RGB lighting and an easy BIOS reset mechanism — neither of which the Gigabyte offers. The BIOS reset feature in particular is underrated; it simplifies recovery from a bad overclock or failed update without needing extra hardware.

In this general info category, neither board is a clear overall winner — it depends on priorities. The Gigabyte B850 Eagle has the edge for users who want a more capable chipset and don't care about aesthetics or BIOS convenience. The Asus Prime B840-Plus WiFi is better suited to builders who value ease of use and system personalization via RGB, while accepting a slightly less capable chipset tier.

Memory:
maximum memory amount 192GB 256GB
overclocked RAM speed 7600 MHz 8200 MHz
memory slots 4 4
DDR memory version 5 5
memory channels 2 2
Supports ECC memory

The Asus Prime B840-Plus WiFi and Gigabyte B850 Eagle WiFi6E both offer 4 memory slots and support DDR5 memory, but there are notable differences in their memory capabilities. The Asus board supports a maximum memory capacity of 192GB, while the Gigabyte board can handle up to 256GB of memory, offering a higher potential memory capacity.

In terms of memory speeds, the Asus board supports overclocked RAM speeds up to 7600 MHz, whereas the Gigabyte board can achieve a higher overclocked RAM speed of 8200 MHz, giving it an advantage in potential memory performance.

Both motherboards support dual memory channels, and neither supports ECC memory, making them suitable for standard consumer applications but not for error-correcting memory needs.

Ports:
USB 3.2 Gen 2 ports (USB-A) 1 2
USB 3.2 Gen 1 ports (USB-A) 2 2
USB 3.2 Gen 2 ports (USB-C) 1 0
USB 3.2 Gen 1 ports (USB-C) 0 1
USB 2.0 ports 4 4
USB 3.2 Gen 2x2 ports 0 0
USB 4 40Gbps ports 0 0
USB 4 20Gbps ports 0 0
Thunderbolt 4 ports 0 0
Thunderbolt 3 ports 0 0
has an HDMI output
DisplayPort outputs 1 1
RJ45 ports 1 1
Has USB Type-C
eSATA ports 0 0
DVI outputs 0 0
has a VGA connector
PS/2 ports 0 1

The Asus Prime B840-Plus WiFi and Gigabyte B850 Eagle WiFi6E offer a similar range of ports but differ in some key aspects. Both motherboards feature USB 3.2 Gen 1 and USB 2.0 ports, with the Asus model having 2 USB 3.2 Gen 1 ports (USB-A) and 4 USB 2.0 ports, while the Gigabyte board matches with 2 USB 3.2 Gen 1 ports (USB-A) and 4 USB 2.0 ports. However, the Asus board includes 1 USB 3.2 Gen 2 port (USB-A) and 1 USB 3.2 Gen 2 port (USB-C), while the Gigabyte board offers 1 USB 3.2 Gen 1 port (USB-C) but no USB 3.2 Gen 2 port (USB-C).

Both boards include HDMI and DisplayPort outputs, providing video output options. Additionally, both motherboards have 1 RJ45 Ethernet port. However, the Gigabyte board is equipped with 1 PS/2 port, which the Asus board lacks. Neither product includes Thunderbolt 3 or Thunderbolt 4 ports, and neither features eSATA, DVI, or VGA connectors.

Overall, while both motherboards share many similarities in terms of ports, the Asus model offers better support for USB 3.2 Gen 2 (USB-A and USB-C), while the Gigabyte board includes a PS/2 port, which the Asus model does not.

Connectors:
USB 3.2 Gen 1 ports (through expansion) 2 2
USB 2.0 ports (through expansion) 4 4
SATA 3 connectors 4 4
fan headers 6 6
USB 3.0 ports (through expansion) 2 2
M.2 sockets 3 3
Has TPM connector
U.2 sockets 0 0
Has mSATA connector
SATA 2 connectors 0 0

The Asus Prime B840-Plus WiFi and Gigabyte B850 Eagle WiFi6E share identical specifications when it comes to connectors. Both motherboards provide 2 USB 3.2 Gen 1 ports (through expansion) and 4 USB 2.0 ports (through expansion). They also both include 4 SATA 3 connectors, 6 fan headers, and 2 USB 3.0 ports (through expansion), offering a similar range of connectivity options for peripherals and storage devices.

For storage expansion, both boards feature 3 M.2 sockets, and neither includes U.2 sockets or mSATA connectors. Additionally, both motherboards have a TPM connector, which provides support for security modules. Both also lack SATA 2 connectors.

Overall, the connectivity and expansion options are identical between the two motherboards, with no differences in their available connectors or storage expansion features.

Expansion slots:
PCIe 4.0 x16 slots 1 0
PCIe 5.0 x16 slots 0 1
PCIe 3.0 x16 slots 3 0
PCIe x1 slots 0 3
PCI slots 0 0
PCIe 2.0 x16 slots 0 0
PCIe x4 slots 0 0
PCIe x8 slots 0 0

The Asus Prime B840-Plus WiFi and Gigabyte B850 Eagle WiFi6E offer different configurations for expansion slots. The Asus model includes 1 PCIe 4.0 x16 slot and 3 PCIe 3.0 x16 slots, providing a mix of high-speed options for graphics cards and other expansion cards. In contrast, the Gigabyte board features 1 PCIe 5.0 x16 slot and 3 PCIe x1 slots, focusing more on the latest PCIe 5.0 standard while providing additional x1 slots for other peripheral cards.

Neither motherboard includes PCIe x4 or PCIe x8 slots, and both lack PCI slots altogether. Additionally, both motherboards do not have PCIe 2.0 x16 slots, which leaves them focused on newer PCIe standards for expansion.

Overall, the Asus and Gigabyte boards have different approaches to expansion slots, with the Asus model emphasizing multiple PCIe 3.0 x16 slots for high-bandwidth components and the Gigabyte board supporting the newer PCIe 5.0 standard for the most demanding cards.

Audio:
audio channels 7.1 7.1
Has S/PDIF Out port
audio connectors 3 3

Both the Asus Prime B840-Plus WiFi and Gigabyte B850 Eagle WiFi6E provide identical audio specifications. Each motherboard supports 7.1 audio channels, delivering high-quality sound for immersive audio experiences. Both boards lack an S/PDIF Out port, which would otherwise allow for digital audio output, and they each feature 3 audio connectors for connecting external audio devices.

In summary, the audio capabilities of these two motherboards are exactly the same, with no differences in terms of audio channels, S/PDIF Out port, or audio connectors.

Storage:
Supports RAID 1
Supports RAID 10 (1+0)
Supports RAID 5
Supports RAID 0
Supports RAID 0+1

The Asus Prime B840-Plus WiFi and Gigabyte B850 Eagle WiFi6E both support the same RAID configurations. Both motherboards are capable of supporting RAID 1, RAID 10 (1+0), and RAID 5, providing options for data redundancy and performance. However, neither motherboard supports RAID 0+1, which is another type of RAID configuration for mirrored and striped drives.

In summary, the storage capabilities regarding RAID are identical for both motherboards, with both offering the same RAID configurations and lacking RAID 0+1 support.

Comparison Summary & Verdict

After examining every spec, these two boards serve distinct types of builders. The Asus Prime B840-Plus WiFi stands out with its easy BIOS reset, RGB lighting, a USB 3.2 Gen 2 Type-C rear port, and a familiar PCIe 4.0 x16 plus PCIe 3.0 expansion layout, making it an approachable and feature-rich choice for mainstream users who value convenience and flexibility. The Gigabyte B850 Eagle WiFi6E counters with a more future-oriented profile: a PCIe 5.0 x16 slot, a higher maximum memory capacity of 256 GB, and a faster overclocked RAM ceiling of 8200 MHz, appealing to power users and enthusiasts who want headroom for next-generation GPUs and heavy memory workloads. Neither board is a clear-cut overall winner; your ideal pick depends entirely on whether you prioritize everyday usability and port variety or raw expandability and forward compatibility.

Asus Prime B840-Plus WiFi
Buy Asus Prime B840-Plus WiFi if...

Buy the Asus Prime B840-Plus WiFi if you want a user-friendly board with easy BIOS reset, RGB lighting, a USB 3.2 Gen 2 Type-C port, and a proven PCIe 4.0 x16 expansion setup.

Gigabyte B850 Eagle WiFi6E
Buy Gigabyte B850 Eagle WiFi6E if...

Buy the Gigabyte B850 Eagle WiFi6E if you need a future-ready platform with a PCIe 5.0 x16 slot, higher maximum memory capacity of 256 GB, and support for faster overclocked RAM speeds up to 8200 MHz.