Does it work with Ryzen 9000 out of the box?

Yes. ASRock lists Ryzen 9000, 8000 and 7000 support on socket AM5. A BIOS update may be needed for the newest chips, so check the board revision.

How does it compare with an X870 board?

X870 boards add more PCIe lanes, USB4 and often better power delivery. This B850M covers mainstream builds in a smaller, simpler package.

Can I use four DDR5 sticks?

Yes, there are four slots and up to 256GB total. Running four sticks usually means lower stable speeds than two, so check the memory QVL.

Yes, Wi-Fi is built in, so no add-in card is needed. Wired Ethernet is also on board.

What form factor cases fit it?

It is micro ATX, so it fits micro ATX and most ATX cases. Check clearance for long graphics cards and tall coolers.

Does it have integrated graphics output?

Yes, one HDMI port works with Ryzen chips that have integrated graphics. Dedicated GPU owners can ignore it.

What do buyers say about the ASRock B850M Pro RS WiFi Micro ATX Motherboard?

Rated 4.8 out of 5 from 20 ratings.

Where can I buy the ASRock B850M Pro RS WiFi Micro ATX Motherboard?

3 stores we checked sell it, including Newegg.com, Walmart, eBay.

ASRock B850M Pro RS WiFi Micro ATX Motherboard

Best price now

$119.99at Newegg.comChecked 9 h ago

Compared across 3 stores. Prices are checked against each store and labelled with when.

Visit Newegg.com

ASRock B850M Pro RS WiFi Micro ATX Motherboard

Best price now

$119.99at Newegg.comChecked 9 h ago

Compared across 3 stores. Prices are checked against each store and labelled with when.

Visit Newegg.com

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Price facts

Lowest price today: $119.99 at Newegg.com (checked Nov 10, 2026).
Checked at 3 stores.

Our take on the ASRock B850M Pro RS WiFi Micro ATX Motherboard

The ASRock B850M Pro RS WiFi is a micro ATX AM5 motherboard built on AMD's B850 chipset. It takes Ryzen 7000, 8000 and 9000 chips, four DDR5 slots up to 256GB, and adds built-in Wi-Fi, a white PCB and heatsink look, and a single HDMI output for integrated graphics. It sits below premium X870 boards on lane count and USB, but covers the essentials most builders need. Owners rate it highly, praising the layout and value while noting the micro ATX size limits expansion.

Best forCompact AM5 gaming buildsWhite-themed micro ATX systemsFirst-time Ryzen 9000 buildersBuyers who want Wi-Fi built in

Pros

Four DDR5 slots with headroom to 256GB
Built-in Wi-Fi saves an add-in card
White finish suits themed builds
Supports Ryzen 7000, 8000 and 9000 out of the box
Micro ATX size fits smaller cases

Cons

Fewer PCIe lanes and USB ports than X870 boards
Only one HDMI output for integrated graphics
Micro ATX limits add-in cards and cooler clearance
Memory above 8000 MT/s is overclocking only

ASRock B850M Pro RS WiFi Micro ATX Motherboard prices at every store

Newegg.comNew
In stock
$119.99Checked 9 h ago
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WalmartNew
In stockSold by Newegg Inc.
$119.99Checked 9 h ago
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eBayNew
In stockSold by newegg
$122.49Checked 9 h ago
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ASRock B850M Pro RS WiFi Micro ATX Motherboard price history

Lowest price we've seen: $119.99 on Nov 10 at Walmart. Tracked across 3 stores since Nov 10.

What reviewers say

4.8 / 520 ratings

Owners rate it 4.8 out of 5 and mostly praise the clean white look, the easy setup and the feature set for a micro ATX board. Complaints are few and center on expansion limits rather than faults.

What people mention

DesignPraisedOwners like the white PCB and heatsinks for themed builds.
SetupPraisedBuilders report a smooth first boot and simple BIOS navigation.
Wi-FiPraisedThe built-in wireless saves buying and installing a separate card.
ExpansionCriticisedSome wish for more PCIe slots and USB ports than micro ATX allows.
MemoryMixedFour slots are welcome, but high-speed kits above 8000 MT/s depend on overclocking.

Specifications

Motherboard Socket Type: AMD Socket AM5
Motherboard Chipset: AMD B850
Motherboard Form Factor: Micro ATX
Motherboard Model: b850m pro rs wifi white
Motherboard Series: pro rs wifi white
CPU Manufacturer: AMD
CPU Series: Ryzen 9000 Series, Ryzen 7000 Series, Ryzen 8000 Series

Questions and answers

Does it work with Ryzen 9000 out of the box?: Yes. ASRock lists Ryzen 9000, 8000 and 7000 support on socket AM5. A BIOS update may be needed for the newest chips, so check the board revision.
How does it compare with an X870 board?: X870 boards add more PCIe lanes, USB4 and often better power delivery. This B850M covers mainstream builds in a smaller, simpler package.
Can I use four DDR5 sticks?: Yes, there are four slots and up to 256GB total. Running four sticks usually means lower stable speeds than two, so check the memory QVL.
Is Wi-Fi included?: Yes, Wi-Fi is built in, so no add-in card is needed. Wired Ethernet is also on board.
What form factor cases fit it?: It is micro ATX, so it fits micro ATX and most ATX cases. Check clearance for long graphics cards and tall coolers.
Does it have integrated graphics output?: Yes, one HDMI port works with Ryzen chips that have integrated graphics. Dedicated GPU owners can ignore it.
Where is the ASRock B850M Pro RS WiFi Micro ATX Motherboard cheapest?: At Newegg.com, for $119.99, as of our latest check.
What do buyers say about the ASRock B850M Pro RS WiFi Micro ATX Motherboard?: Rated 4.8 out of 5 from 20 ratings.
Where can I buy the ASRock B850M Pro RS WiFi Micro ATX Motherboard?: 3 stores we checked sell it, including Newegg.com, Walmart, eBay.