ASRock Z790 PRO RS vs B660M Pro RS/ax Motherboard Comparison

ASRock Z790 PRO RS and ASRock B660M Pro RS/ax are both motherboards with the same Socket (LGA1700), PCI-Express x16 Slots (2) and RAM Slots (4). The main differences are in Form factor, Chipset, Supported Memory and Wireless LAN.

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ASRock Z790 PRO RS	ASRock B660M Pro RS/ax
Prices (Change region) In Stock $263.06 Last updated 38 minutes ago. In Stock + $49.99 Shipping $249.90	Prices (Change region) Price not available
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Brand ASRock	Brand ASRock
Model Z790 PRO RS	Model B660M Pro RS/ax
Release Date 📅 October 2022	Release Date -
* 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 ►
Socket LGA1700	Socket LGA1700
Form factor ATX	Form factor Micro ATX
Chipset Intel Z790	Chipset Intel B660
Supported Memory DDR5 4400Mhz 4800Mhz 5200Mhz 5600Mhz 6000Mhz 6400Mhz 6600Mhz 6800Mhz	Supported Memory DDR4 2133Mhz 2400Mhz 2666Mhz 2933Mhz 3000Mhz 3200Mhz 3466Mhz 3600Mhz 3733Mhz 3800Mhz 4000Mhz 4200Mhz 4266Mhz 4600Mhz 4800Mhz 5333Mhz
* 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 ALC897	Audio Chipset -
Audio Channels 7.1 Channels	Audio Channels -
LAN Chipset Dragon RTL8125BG	LAN Chipset -
Max LAN Speed 2.5Gbps	Max LAN Speed -
SLI Support No	SLI Support No
CrossFire Support Yes	CrossFire Support Yes
RAID Support Yes	RAID Support Yes
Back Connect No	Back Connect No
Back I/O Ports 2 x Antenna Mounting Points 1 x PS/2 Mouse/Keyboard Port 1 x HDMI Port 1 x DisplayPort 1.4 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) 2 x USB 3.2 Gen1 Ports 4 x USB 2.0 Ports 1 x RJ-45 LAN Port HD Audio Jacks: Line in / Front Speaker / Microphone	Back I/O Ports -
Wireless LAN No	Wireless LAN Yes
Wi-Fi Generation -	Wi-Fi Generation 6E
PCI-Express x16 Slots 2	PCI-Express x16 Slots 2
PCI-Express x4 Slots 0	PCI-Express x4 Slots 0
PCI-Express x1 Slots 2	PCI-Express x1 Slots 1
SATA 6 Gbps Ports 8	SATA 6 Gbps Ports 4
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 5	M.2 Ports 3
M.2 Devices support 2260 / 2280 - M Key 2260 / 2280 - M Key 2260 / 2280 - M Key 2260 / 2280 - M Key 2230 - E Key	M.2 Devices support 2242 / 2260 / 2280 - M Key 2280 - M Key 2230 - E Key
RAM Slots 4	RAM Slots 4
Maximum Supported RAM 192 GB	Maximum Supported RAM 128 GB
Onboard USB 2.0 2	Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 2	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 1	Onboard USB 3.2 Gen 2x2 0