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Deal.ai › Sapphire › Motherboards

Sapphire

Sapphire B550M M-ATX Desktop PC Motherboard

Sapphire B550M M-ATX Desktop PC Motherboard

Best price now

$159.35at NeweggChecked Nov 10

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

Last seen at $159.35 at Newegg on Nov 10.

Our take on the Sapphire B550M M-ATX Desktop PC Motherboard

The Sapphire B550M is a micro-ATX AM4 motherboard built on AMD's B550 chipset, with PCIe 4.0, DDR4 memory and built-in Wi-Fi. It carries HDMI and DisplayPort outputs, so it can drive a display from an AM4 APU without a graphics card. It suits a compact Ryzen build where Wi-Fi and video outputs matter more than expansion slots. Against other B550M boards it is unusual for including Wi-Fi, though it offers fewer PCIe slots and M.2 positions than full-size ATX rivals.

Best forCompact micro-ATX Ryzen buildsBuilders who want onboard Wi-FiAPU systems using integrated graphicsBudget-conscious first-time builders

Pros

Onboard Wi-Fi saves a separate card
PCIe 4.0 support for modern graphics cards and SSDs
HDMI and DisplayPort for APU video output
Micro-ATX size fits smaller cases
AM4 socket covers a wide range of Ryzen CPUs

Cons

B550 limits PCIe 4.0 to the main slot and one M.2
Fewer expansion slots than ATX boards
No USB-C front header on many B550M designs
Older chipset, so no upgrade path beyond AM4

Sapphire B550M M-ATX Desktop PC Motherboard prices at every store

NeweggNew
In stock
$159.35Free shippingChecked Nov 10
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Sapphire B550M M-ATX Desktop PC Motherboard price history

Lowest price we've seen: $159.35 on Nov 10 at Newegg. Tracked across 1 store since Nov 10.

Specifications

Connections: HDMI, DisplayPortSource
No. of HDMI (pcs): 1Source
Form Factor: Micro-ATXSource
Processor: AMDSource
Chipset: AMD B550Source
Wi-Fi: YesSource
PCIe Version: 4.0Source
Memory Type: DDR4Source
Socket AMD: Socket AM4Source

Questions and answers

Which CPUs does it support?: It uses the AM4 socket and AMD B550 chipset, so it takes Ryzen 3000 and 5000 series processors, plus many 4000G APUs. Check Sapphire's CPU support list for the exact BIOS requirement.
Do I need a graphics card?: Only if your CPU lacks integrated graphics. The HDMI and DisplayPort outputs work with Ryzen APUs; most Ryzen chips without a G suffix need a discrete card.
Is PCIe 4.0 available on every slot?: No. On B550, PCIe 4.0 comes from the CPU to the main graphics slot and one M.2 slot. Other slots and headers run at PCIe 3.0.
Does it have Wi-Fi built in?: Yes, Wi-Fi is integrated, so you do not need a separate adapter or an Ethernet cable. Wired Ethernet is also present for a more stable connection.
What memory can I install?: It takes DDR4 DIMMs in dual-channel configuration. B550 boards typically support up to 128GB, but confirm the speed and capacity in Sapphire's memory list.
Will it fit my case?: It is micro-ATX, so it fits micro-ATX and ATX cases. It will not fit mini-ITX cases.
Where is the Sapphire B550M M-ATX Desktop PC Motherboard cheapest?: At Newegg, for $159.35, as of our latest check.

Stores we've priced the Sapphire B550M M-ATX Desktop PC Motherboard at

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