ASRock 990FX EXTREME3 vs B850M-X Motherboard Comparison

ASRock 990FX EXTREME3 and ASRock B850M-X are both motherboards with the same PCI-Express x1 Slots (1). The main differences are in Socket, Form factor, Chipset and Supported Memory.

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ASRock 990FX EXTREME3	ASRock B850M-X
Prices (Change region) Out of Stock Free shipping $219.99 - Buy now	Prices (Change region) Out of Stock + $1.99 Shipping $109.99 Out of Stock Free shipping $196.89
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Pangoly Score (How do we rate?) 82	Pangoly Score (How do we rate?) -
Brand ASRock	Brand ASRock
Model 990FX EXTREME3	Model B850M-X
Release Date 📅 September 2011	Release Date 📅 January 2025
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★☆ (29 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 ►
Pros Supports NVIDIA Quad-GPU SLI Supports AMD Quad-GPU CrossFireX	Pros -
Cons Limited overclock	Cons -
Socket AM3+/AM3	Socket AM5
Form factor ATX	Form factor Micro ATX
Chipset AMD 990FX	Chipset AMD B850
Supported Memory DDR3 800Mhz 1066Mhz 1333Mhz 1600Mhz 1866Mhz 2100Mhz	Supported Memory DDR5 4400Mhz 4800Mhz 5200Mhz 5600Mhz 6000Mhz 6200Mhz 6400Mhz 6600Mhz 6800Mhz 7000Mhz 7200Mhz 7600Mhz 7800Mhz 8000Mhz 8200Mhz
* 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 -	Audio Chipset Realtek ALC897
Audio Channels -	Audio Channels 7.1 Channels
LAN Chipset -	LAN Chipset Dragon RTL8125BG
Max LAN Speed -	Max LAN Speed 2.5Gbps
SLI Support Yes	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 -	Back I/O Ports 2 x Antenna Mounting Points 1 x HDMI Port 1 x DisplayPort 1.4 1 x USB 3.2 Gen1 Type-C Port 3 x USB 3.2 Gen1 Type-A Ports 2 x USB 2.0 Ports 1 x RJ-45 LAN Port 1 x BIOS Flashback Button HD Audio Jacks: Line in / Front Speaker / Microphone
Wireless LAN No	Wireless LAN No
PCI-Express x16 Slots 3	PCI-Express x16 Slots 2
PCI-Express x4 Slots 0	PCI-Express x4 Slots 0
PCI-Express x1 Slots 1	PCI-Express x1 Slots 1
SATA 6 Gbps Ports 5	SATA 6 Gbps Ports 4
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 0	M.2 Ports 3
M.2 Devices support -	M.2 Devices support 2280 - M Key 2260 / 2280 - M Key 2230 - E 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 0	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