ASUS M5A99X Evo vs B860M-BRO Motherboard Comparison

ASUS M5A99X Evo and Asus B860M-BRO are both motherboards with the same PCI-Express x1 Slots (2) and Onboard USB 3.2 Gen 1 (1). The main differences are in Socket, Form factor, Chipset and Supported Memory.

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ASUS M5A99X Evo	Asus B860M-BRO
Prices (Change region) Out of Stock Free shipping $149.99	Prices (Change region) In Stock Free shipping $155.87
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Brand Asus	Brand Asus
Model M5A99X Evo	Model B860M-BRO
Release Date -	Release Date 📅 January 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Compatible PC parts Processors ► Memory ► Cases ► CPU Coolers ►	Compatible PC parts Processors ► Memory ► Cases ► CPU Coolers ►
Series	Series -
Socket AM3+	Socket LGA1851
Form factor ATX	Form factor Micro ATX
Chipset AMD 990X	Chipset Intel B860
Supported Memory DDR3 1066Mhz 1333Mhz 1600Mhz 1866Mhz 2133Mhz	Supported Memory DDR5 4800Mhz 7200Mhz 7600Mhz 7800Mhz 8000Mhz 8200Mhz 8400Mhz 8600Mhz 8800Mhz
* High clock speeds may require enabling the XMP profile in the motherboard BIOS ** RAM support may also depend on the CPU memory controller
ECC RAM Support No	ECC RAM Support No
SLI Support Yes	SLI Support No
CrossFire Support Yes	CrossFire Support No
RAID Support Yes	RAID Support Yes
Back Connect No	Back Connect No
Wireless LAN No	Wireless LAN No
PCI-Express x16 Slots 3	PCI-Express x16 Slots 1
PCI-Express x4 Slots 0	PCI-Express x4 Slots 0
PCI-Express x1 Slots 2	PCI-Express x1 Slots 2
SATA 6 Gbps Ports 6	SATA 6 Gbps Ports 4
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 0	M.2 Ports 2
M.2 Devices support -	M.2 Devices support 2280 - M Key 2280 - M Key
RAM Slots 4	RAM Slots 2
Maximum Supported RAM 32 GB	Maximum Supported RAM 128 GB
Onboard USB 2.0 3	Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 1	Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 0	Onboard USB 3.2 Gen 2 1
Onboard USB 3.2 Gen 2x2 0	Onboard USB 3.2 Gen 2x2 0