ASROCK B450M PRO4 R2.0 User Manual

B450M Pro4 R2.0
33
English
2.7 CrossFireX
TM
and Quad CrossFireX
TM
Operation Guide
is motherboard supports CrossFireX
TM
and Quad CrossFireX
TM
that allows you
to install up to two identical PCI Express x16 graphics cards.
2.7.1 Installing Two CrossFireX
TM
-Ready Graphics Cards
Step 1
Insert one graphics card into PCIE2 slot
and the other graphics card to PCIE3 slot.
Make sure that the cards are properly
seated on the slots.
Step 2
Connect two graphics cards by installing
a CrossFire Bridge on the CrossFire Bridge
Interconnects on the top of the graphics
cards. (e CrossFire Bridge is provided
with the graphics card you purchase, not
bundled with this motherboard. Please
refer to your graphics card vendor for
details.)
1. You should only use identical CrossFireX
TM
-ready graphics cards that are AMD
certied.
2. Make sure that your graphics card driver supports AMD CrossFireX
TM
technology.
Download the drivers from the AMD’s website: www.amd.com
3. Make sure that your power supply unit (PSU) can provide at least the minimum
power your system requires. It is recommended to use a AMD certied PSU. Please
refer to the AMD’s website for details.
4. If you pair a 12-pipe CrossFireX
TM
Edition card with a 16-pipe card, both cards will
operate as 12-pipe cards while in CrossFireX
TM
mode.
5. Dierent CrossFireX
TM
cards may require dierent methods to enable CrossFi-
reX
TM
. Please refer to AMD graphics card manuals for detailed installation guide.
CrossFire Bridge

ASROCK B450M PRO4 R2.0 Specifications

General

Processor socket	Socket AM4
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 3, AMD Ryzen 5, AMD Ryzen 7
Audio chip	Realtek ALC892 / Realtek ALC897
Component for	PC
Power source type	ATX
Motherboard chipset	AMD B450
PC health monitoring	FAN, Temperature, Voltage
Audio output channels	7.1 channels
Motherboard form factor	micro ATX
Windows operating systems supported	Windows 10 x64, Windows 11 x64
Memory channels	Dual-channel
Memory slots type	DIMM
Unbuffered memory	Yes
Number of memory slots	4
Supported memory types	DDR4-SDRAM
Maximum internal memory	128 GB
Supported memory clock speeds	2133, 2400, 2667, 2933, 3200 MHz
BIOS type	UEFI AMI
ACPI version	5.1
BIOS memory size	128 Mbit
System Management BIOS (SMBIOS) version	2.3
DirectX version	12.0
Maximum resolution	4096 x 2160 pixels
Number of displays supported	3
Parallel processing technology support	CrossFireX, Quad-GPU CrossFireX
HDMI version	1.4
USB connector type	USB Type-A, USB Type-C
USB 2.0 ports quantity	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0
Wi-Fi	No
LAN controller	Realtek RTL8111H
Ethernet interface type	Gigabit Ethernet
Cables included	SATA
Bundled software	ASRock A-Tuning ASRock Polychrome SYNC ASRock XFast LAN
RAID levels	0, 1, 10
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	M.2, PCI Express 3.0, SATA III
Harmonized System (HS) code	84733020

Weight and Dimensions

Width	244 mm