Gigabyte B660M GAMING X AX DDR4 vs B660 GAMING X AX DDR4 Motherboard Comparison

Gigabyte B660M GAMING X AX DDR4 and Gigabyte B660 GAMING X AX DDR4 are both motherboards with the same Socket (LGA1700), Chipset (Intel B660) and Supported Memory (DDR4-2133 / 2400 / 2666 / 2933 / 3000 / 3200 / ...). The main differences are in Form factor, CrossFire Support, Back I/O Ports and PCI-Express x16 Slots.

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Gigabyte B660M GAMING X AX DDR4	Gigabyte B660 GAMING X AX DDR4
Prices (Change region) In Stock Free shipping $334.10	Prices (Change region) In Stock + $39.90 Shipping $2,999.00
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Brand Gigabyte	Brand Gigabyte
Model B660M GAMING X AX DDR4 B660M GAMING X AX DDR4 (rev. 1.1)	Model B660 GAMING X AX DDR4
Release Date -	Release Date -
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★☆ (26 reviews) Add a product review	User reviews ★★★★★ (2 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 LGA1700	Socket LGA1700
Form factor Micro ATX	Form factor ATX
Chipset Intel B660	Chipset Intel B660
Supported Memory DDR4 2133Mhz 2400Mhz 2666Mhz 2933Mhz 3000Mhz 3200Mhz 3300Mhz 3333Mhz 3400Mhz 3466Mhz 3600Mhz 3666Mhz 3733Mhz 3800Mhz 3866Mhz 4000Mhz 4133Mhz 4266Mhz 4300Mhz 4400Mhz	Supported Memory DDR4 2133Mhz 2400Mhz 2666Mhz 2933Mhz 3000Mhz 3200Mhz 3300Mhz 3333Mhz 3400Mhz 3466Mhz 3600Mhz 3666Mhz 3733Mhz 3800Mhz 3866Mhz 4000Mhz 4133Mhz 4266Mhz 4300Mhz 4400Mhz
* 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 Channels 7.1 Channels	Audio Channels 7.1 Channels
Max LAN Speed 10/100/1000/2500Mbps	Max LAN Speed 10/100/1000/2500Mbps
SLI Support No	SLI Support No
CrossFire Support Yes	CrossFire Support No
RAID Support Yes	RAID Support Yes
Back Connect No	Back Connect No
Back I/O Ports 3 x USB 3.2 Gen 1 ports 5 x USB 2.0/1.1 ports 2 x SMA antenna connectors (2T2R) 1 x HDMI 2.1 port 1 x DisplayPort 1 x RJ-45 port 3 x audio jacks	Back I/O Ports 1 x USB 3.2 Gen 2 Type-A port (red) 2 x USB 3.2 Gen 1 ports 5 x USB 2.0/1.1 ports 1 x DisplayPort 1 x HDMI 2.0 port 1 x RJ-45 port 6 x audio jacks
Wireless LAN Yes	Wireless LAN Yes
Wi-Fi Generation 6	Wi-Fi Generation 6
PCI-Express x16 Slots 2	PCI-Express x16 Slots 3
PCI-Express x4 Slots 0	PCI-Express x4 Slots 0
PCI-Express x1 Slots 0	PCI-Express x1 Slots 0
SATA 6 Gbps Ports 4	SATA 6 Gbps Ports 4
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 2	M.2 Ports 3
M.2 Devices support 2260 / 2280 - M Key 2260 / 2280 / 22110 - M Key	M.2 Devices support 2260 / 2280 / 22110 - M Key 2260 / 2280 / 22110 - M Key 2260 / 2280 / 22110 - M Key
RAM Slots 4	RAM Slots 4
Maximum Supported RAM 128 GB	Maximum Supported RAM 128 GB
Onboard USB 2.0 2	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 1	Onboard USB 3.2 Gen 2 1
Onboard USB 3.2 Gen 2x2 0	Onboard USB 3.2 Gen 2x2 0