ASUS ROG Crosshair X870E Dark Hero vs ASRock B450M PRO4 R2.0 Motherboard Comparison

ASUS ROG Crosshair X870E Dark Hero and ASRock B450M PRO4 R2.0 are both motherboards with the same PCI-Express x16 Slots (2), SATA 6 Gbps Ports (4) and RAM Slots (4). The main differences are in Socket, Form factor, Chipset and Supported Memory.

Save comparison

ASUS ROG Crosshair X870E Dark Hero	ASRock B450M PRO4 R2.0
Prices (Change region) In Stock $699.99 Last updated 27 minutes ago. In Stock $699.99 In Stock Free shipping $699.99 Out of Stock Free shipping $699.99 In Stock $719.99 Show 2 more offers	Prices (Change region) In Stock Free shipping $125.88 - Buy now
* Pangoly may earn a commission when you use one of the links to make a purchase. (Disclosure) * Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.
Brand ASUS	Brand ASRock
Model ROG CROSSHAIR X870E DARK HERO 90mb1nt0-m0eay0 90mb1nt0-m0vay0	Model B450M PRO4 R2.0
Release Date 📅 February 2026	Release Date 📅 April 2022
* 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 AM5	Socket AM4
Form factor ATX	Form factor Micro ATX
Chipset AMD X870E	Chipset AMD B450
Supported Memory DDR5 4400Mhz 9600Mhz	Supported Memory DDR4 2133Mhz 2400Mhz 2666Mhz 2933Mhz 3200Mhz
* 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 ALC892/897
Audio Channels ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4082	Audio Channels 7.1 CH HD Audio with Content Protection Supports Surge Protection
LAN Chipset -	LAN Chipset Realtek RTL8111H
Max LAN Speed 10Gbps + 5Gbps	Max LAN Speed 1Gbps
SLI Support No	SLI Support No
CrossFire Support No	CrossFire Support Yes
RAID Support Yes	RAID Support Yes
Back Connect No	Back Connect No
Back I/O Ports 2 x USB4 (40Gbps) ports (2 x USB Type-C) 9 x USB 10Gbps connector (6 x Type-A + 3 x USB Type-C) 1 x HDMI port 1 x Wi-Fi module 1 x Realtek 10Gb Ethernet port 1 x Realtek 5Gb Ethernet port 2 x Gold-plated audio jacks 1 x Optical S/PDIF out port 1 x BIOS FlashBack button 1 x Clear CMOS button	Back I/O Ports 1 x PS/2 Mouse/Keyboard Port 1 x D-Sub Port 1 x DVI-D Port 1 x HDMI Port 2 x USB 2.0 Ports (Supports ESD Protection) 1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection) 1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection) 4 x USB 3.2 Gen1 Ports (Supports ESD Protection) 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED) HD Audio Jacks: Line in / Front Speaker / Microphone
Wireless LAN Yes	Wireless LAN No
Wi-Fi Generation 7	Wi-Fi Generation -
PCI-Express x16 Slots 2	PCI-Express x16 Slots 2
PCI-Express x4 Slots 0	PCI-Express x4 Slots 0
PCI-Express x1 Slots 0	PCI-Express x1 Slots 1
SATA 6 Gbps Ports 4	SATA 6 Gbps Ports 4
SATA Express Ports 0	SATA Express Ports 0
M.2 Ports 5	M.2 Ports 2
M.2 Devices support 2242 / 2260 / 2280 / 22110 - M Key 2242 / 2260 / 2280 - M Key 2242 / 2260 / 2280 - M Key 2242 / 2260 / 2280 - M Key 2230 - M Key	M.2 Devices support 2242 / 2260 / 2280 - M Key 2230 / 2242 / 2260 / 2280 - M Key
RAM Slots 4	RAM Slots 4
Maximum Supported RAM 256 GB	Maximum Supported RAM 128 GB
Onboard USB 2.0 3	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 0
Onboard USB 3.2 Gen 2x2 2	Onboard USB 3.2 Gen 2x2 0