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ASRock B450M-HDV R4.0 Motherboard
ASRock B450M-HDV R4.0
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ASRock B450M PRO4 Motherboard
ASRock B450M PRO4
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Asus Prime B450M-A Motherboard
Asus Prime B450M-A
Editiorial reviews
2
2 editorial reviews
We kick off our AMD B450 chipset reviews with the ASRock B450M Pro4 mATX motherboard, a budget option for those wanting an entry into the world of AMD Ryzen CPUs....Read more
Conclusion and Verdict The B450M Pro4 motherboard is a really interesting option for gamers with a lower budget. It supports most new technologies, all AM4 processors, memory up to DDR4-3466, two M.2 SSD and many ...Read more
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1
1 editorial reviews
ASUS isn't always known for their bang for buck, but the ASUS PRIME B450M-K is a perfect example of it. Here's our review of this great entry-level board.Read more
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User rating
41
4.0 out of 5
41 user ratings
5 stars
26 %
4 stars
46 %
3 stars
24 %
2 stars
0 %
1 stars
2 %
52
3.9 out of 5
52 user ratings
5 stars
34 %
4 stars
30 %
3 stars
25 %
2 stars
9 %
1 stars
0 %
78
3.7 out of 5
78 user ratings
5 stars
24 %
4 stars
32 %
3 stars
30 %
2 stars
11 %
1 stars
1 %

General

Motherboard typeMicro-ATXMicro-ATXMicro-ATX
Processor socketSocket AM4Socket AM4Socket AM4

Memory

Supported memory bus clock
  • 2400 MHz
  • 2133 MHz
  • 2667 MHz
  • 2933 MHz
  • 3200 MHz
  • 2400 MHz
  • 2133 MHz
  • 2667 MHz
  • 2933 MHz
  • 3200 MHz
  • 2400 MHz
  • 2133 MHz
  • 2666 MHz
  • 2800 MHz
  • 3000 MHz
  • 3200 MHz
RAM technologyDDR4DDR4DDR4
Memory slots typeDIMMDIMMDIMM
Maximum RAM size32 GB64 GB64 GB
Number of memory slots244
Unbuffered memoryyes
N/A
yes
Memory channelsDualDualDual
ECCyes
N/A
yes
Non-ECCyes
N/A
N/A

Audio properties

Audio codecRealtek ALC887Realtek ALC892Realtek ALC887
Audio output channels7.17.17.1

Technical details

Compatible processor seriesAMD RyzenAMD RyzenAMD Ryzen
Maximum number of processors111
Maximum number of SMP processors
N/A
N/A
1

BIOS

BIOS typeUEFI AMIUEFI AMIUEFI AMI
BIOS features
  • Multilingual BIOS
  • JumperFree
  • SMBIOS 2.3 support
  • UEFI BIOS
  • ACPI 5.1 support
  • Multilingual BIOS
  • JumperFree
  • SMBIOS 2.3 support
  • UEFI BIOS
  • ACPI 5.1 support
  • Multilingual BIOS
  • ASUS Quiet Thermal Solution
  • UEFI BIOS
  • ASUS EZ Flash 3
  • ACPI 6.1 support
  • SMBIOS 3.1 support
BIOS memory size128.0 mB128.0 mB128.0 mB
System Management BIOS (SMBIOS) version2.32.33.1
ACPI version5.15.16.1

Internal I/O ports

Number of COM connectors111
CPU fan connectoryesyesyes
Number of chassis fan connectors2
N/A
2
12V power connectoryesyesyes
TPM connectoryesyesyes
Number of SATA III connectors446
ATX Power connector (24-pin)
N/A
YY
S/PDIF out connector
N/A
N/A
yes
Number of EATX power connectors
N/A
N/A
1
Front panel connector
N/A
N/A
yes

Rear panel I/O ports

Microphone inputyes
N/A
N/A
Headphone outputs1
N/A
N/A
HDMI ports quantity111
Ethernet LAN (RJ-45) ports111
PS/2 ports quantity112
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity444
VGA (D-Sub) ports quantity111
DVI-D ports quantity111
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
N/A
1
N/A
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
N/A
12
HDMI version
N/A
N/A
2.0b

Network

Wi-Fino
N/A
N/A
Ethernet LAN (Network)yesyesyes
LAN controllerRealtek RTL8111HRealtek RTL8111HRealtek RTL8111H
Ethernet interface typeGigabit EthernetGigabit EthernetGigabit Ethernet

Dimensions

Width9.06 in9.61 in9.61 in
Depth7.91 in9.61 in9.45 in

Often compared with ASRock B450M-HDV R4.0

Often compared with ASRock B450M PRO4

Often compared with Asus Prime B450M-A