Does the B840 chipset support CPU overclocking?

No. B840 is a locked, mainstream chipset, so CPU overclocking is not supported. Memory tuning is also more limited than on B650 or X870 boards.

Which AMD CPUs fit this board?

It uses the AM5 socket, so it takes AMD Ryzen 7000, 8000 and 9000 series desktop processors. Check Asus's CPU support list for the exact model.

How many M.2 drives can I install?

Three M.2 slots. They are PCIe 4.0, so Gen 4 SSDs run at full speed; Gen 5 drives will run at Gen 4 speed.

Do I need a CPU to update the BIOS?

No. BIOS FlashBack updates the firmware from a USB drive without a CPU, memory or graphics card installed.

Does it have built-in Wi-Fi and Ethernet?

Yes. Wi-Fi 6E is built in, along with a 2.5Gb Ethernet port, so no add-in card is needed for networking.

What comes in the box?

The board, Wi-Fi antenna, SATA cables and mounting hardware. Asus does not include a manual beyond the quick-start guide.

What do buyers say about the Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard?

Rated 1 out of 5 from 1 ratings.

Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard

Best price now

$199.99at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

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Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard

Best price now

$199.99at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $199.99 at Walmart on Nov 10.

Our take on the Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard

The Asus Prime B840-PLUS WIFI is an ATX motherboard for AMD's AM5 socket, built on the mainstream B840 chipset. It covers the essentials for a modern gaming or work build: DDR5 memory, PCIe 4.0, three M.2 slots, Wi-Fi 6E, 2.5Gb Ethernet and USB 10Gbps ports including Type-C. It sits below Asus's TUF and ROG boards, so it trades overclocking headroom and extra lanes for a simpler, well-connected board. It suits builders who want AM5 with fast networking and storage without paying for enthusiast features.

Best forAM5 gaming builds on a budgetBuilders who want Wi-Fi 6E and 2.5Gb LAN built inSystems with several M.2 drivesFirst-time ATX builders

Pros

Three M.2 slots for fast storage
Wi-Fi 6E and 2.5Gb Ethernet onboard
USB 10Gbps Type-A and Type-C
BIOS FlashBack updates the BIOS without a CPU
Aura Sync RGB headers for lighting

Cons

B840 chipset limits overclocking and PCIe lanes
PCIe 4.0 only, no PCIe 5.0
No rear USB4 or Thunderbolt
VRM and features below Asus TUF and ROG boards

Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard prices at every store

WalmartNew
In stockSold by DealClockReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$199.99Checked Nov 10
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About the Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard

The ASUS Prime B840-PLUS WIFI is an ATX motherboard for AMD AM5 processors, built on the B840 chipset. It supports DDR5 memory and PCIe 4.0, and it is designed to be AI ready.

Storage is handled by three M.2 slots. For networking, it has Wi-Fi 6E and 2.5Gb LAN. Video output is through DisplayPort and HDMI.

The board has USB 10Gbps Type-A and Type-C ports. BIOS FlashBack allows BIOS updates, and Aura Sync RGB lets you control lighting.

Brand: ASUS
Socket: AMD AM5
Chipset: AMD B840
Form factor: ATX
Memory: DDR5
Expansion: PCIe 4.0
Storage: 3 x M.2
Wireless: Wi-Fi 6E
Ethernet: 2.5Gb LAN
Video output: DisplayPort, HDMI
USB: USB 10Gbps Type-A and Type-C
Lighting: Aura Sync RGB
Features: BIOS FlashBack
Dimensions: 12" x 9.6"

Specifications

color: MulticolorSource
size: 12" x 9.6"Source

Questions and answers

Does the B840 chipset support CPU overclocking?: No. B840 is a locked, mainstream chipset, so CPU overclocking is not supported. Memory tuning is also more limited than on B650 or X870 boards.
Which AMD CPUs fit this board?: It uses the AM5 socket, so it takes AMD Ryzen 7000, 8000 and 9000 series desktop processors. Check Asus's CPU support list for the exact model.
How many M.2 drives can I install?: Three M.2 slots. They are PCIe 4.0, so Gen 4 SSDs run at full speed; Gen 5 drives will run at Gen 4 speed.
Do I need a CPU to update the BIOS?: No. BIOS FlashBack updates the firmware from a USB drive without a CPU, memory or graphics card installed.
Does it have built-in Wi-Fi and Ethernet?: Yes. Wi-Fi 6E is built in, along with a 2.5Gb Ethernet port, so no add-in card is needed for networking.
What comes in the box?: The board, Wi-Fi antenna, SATA cables and mounting hardware. Asus does not include a manual beyond the quick-start guide.
Where is the Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard cheapest?: At Walmart, for $199.99, as of our latest check.
What do buyers say about the Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard?: Rated 1 out of 5 from 1 ratings.