ASUS PRIME Z590-A vs PRIME B860M-A Motherboard Comparison

ASUS PRIME Z590-A and Asus PRIME B860M-A are both motherboards with the same RAM Slots (4), Onboard USB 3.2 Gen 1 (1) and Onboard USB 3.2 Gen 2 (1). The main differences are in Socket, Form factor, Chipset and Supported Memory.

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ASUS PRIME Z590-A	Asus PRIME B860M-A
Prices (Change region) In Stock $199.00 Out of Stock + $29.99 Shipping $270.12	Prices (Change region) In Stock Free shipping $269.79
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Brand ASUS	Brand Asus
Model PRIME Z590-A 90MB16D0-M0AAY0	Model PRIME B860M-A
Release Date 📅 January 2021	Release Date 📅 January 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★☆ (8 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 ►
Socket LGA1200	Socket LGA1851
Form factor ATX	Form factor Micro ATX
Chipset Intel Z590	Chipset Intel B860
Supported Memory DDR4 2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3000Mhz 3200Mhz 3333Mhz 3400Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4133Mhz 4266Mhz 4400Mhz 4500Mhz 4600Mhz 4700Mhz 4800Mhz 5000Mhz 5133Mhz 5333Mhz	Supported Memory DDR5 4800Mhz 8600Mhz
* 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
Audio Chipset Realtek S1220A 7.1 Surround Sound High Definition Audio CODEC* * Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for 8-Channel audio.	Audio Chipset -
Audio Channels 7.1 Channels	Audio Channels -
LAN Chipset Intel I225-V 2.5Gb Ethernet	LAN Chipset -
Max LAN Speed 10/100/1000/2500Mbps	Max LAN Speed -
SLI Support No	SLI Support No
CrossFire Support No	CrossFire Support No
RAID Support Yes	RAID Support Yes
Back Connect No	Back Connect No
Back I/O Ports 1 x USB 3.2 Gen 2x2 port (1 x USB Type-C) 4 x USB 3.2 Gen 2 ports (3 x Type-A 1 x Type-C) 4 x USB 2.0 ports (4 x Type-A) 1 x DisplayPort 1 x HDMI port 1 x Intel I225-V 2.5Gb Ethernet port 5 x Audio jacks 1 x Optical S/PDIF out port	Back I/O Ports -
Wireless LAN No	Wireless LAN No
PCI-Express x16 Slots 3	PCI-Express x16 Slots 2
PCI-Express x4 Slots 1	PCI-Express x4 Slots 0
PCI-Express x1 Slots 0	PCI-Express x1 Slots 1
SATA 6 Gbps Ports 6	SATA 6 Gbps Ports 4
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 3	M.2 Ports 2
M.2 Devices support 2242 / 2260 / 2280 / 22110 - M Key (Intel 11th Gen only) 2242 / 2260 / 2280 / 22110 - M Key 2242 / 2260 / 22110 - M Key	M.2 Devices support 2242 / 2260 / 2280 - M Key 2242 / 2260 / 2280 - M Key
RAM Slots 4	RAM Slots 4
Maximum Supported RAM 128 GB	Maximum Supported RAM 256 GB
Onboard USB 2.0 2	Onboard USB 2.0 1
Onboard USB 3.2 Gen 1 1	Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 1	Onboard USB 3.2 Gen 2 1
Onboard USB 3.2 Gen 2x2 0	Onboard USB 3.2 Gen 2x2 0