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ASRock B450 Steel Legend Motherboard
ASRock B450 Steel Legend
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ASRock B450M PRO4 Motherboard
ASRock B450M PRO4
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MSI B450-A Pro - ATX Motherboard
MSI B450-A Pro - ATX
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MSI B450-A Pro MAX Motherboard
MSI B450-A Pro MAX
Editiorial reviews
5
5 editorial reviews
The Steel Legend series of motherboards according to ASRock represents the philosophical state of rock-solid durability and irresistible aesthetics. It’s built around most demanding specs and features, providing high quality components and materials to ensure ...Read more
The ASRock B450M Steel Legend is quite highly recommended for a budget AM4 board, and we just took it upon ourselves to see how good it truly is.Read more
If you're looking for a feature-rich B450 motherboard under £100, the ASRock B450 Steel Legend may be the option for you. Check out what we thought....Read more
Read editorial 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
Read editorial reviews
User rating
63
3.7 out of 5
63 user ratings
5 stars
23 %
4 stars
39 %
3 stars
25 %
2 stars
9 %
1 stars
1 %
51
3.9 out of 5
51 user ratings
5 stars
35 %
4 stars
31 %
3 stars
25 %
2 stars
7 %
1 stars
0 %
43
4.0 out of 5
43 user ratings
5 stars
20 %
4 stars
53 %
3 stars
25 %
2 stars
0 %
1 stars
0 %
59
4.0 out of 5
59 user ratings
5 stars
38 %
4 stars
37 %
3 stars
15 %
2 stars
5 %
1 stars
3 %

General

Motherboard typeATXMicro-ATXATXATX
Processor socketSocket AM4Socket AM4Socket AM4Socket AM4
Cooling type
N/A
N/A
Passive
N/A

Memory

Supported memory bus clock
  • 2400 MHz
  • 2133 MHz
  • 2667 MHz
  • 2933 MHz
  • 3200 MHz
  • 3466 MHz
  • 3533 MHz
  • 2400 MHz
  • 2133 MHz
  • 2667 MHz
  • 2933 MHz
  • 3200 MHz
  • 2400 MHz
  • 1866 MHz
  • 2133 MHz
  • 2667 MHz
  • 2800 MHz
  • 2933 MHz
  • 3000 MHz
  • 2667 MHz
  • 3200 MHz
  • 3466 MHz
  • 3066 MHz
  • 2400 MHz
  • 1866 MHz
  • 2133 MHz
  • 2667 MHz
  • 2800 MHz
  • 2933 MHz
  • 3000 MHz
  • 2667 MHz
  • 3200 MHz
  • 3466 MHz
  • 3733 MHz
  • 3866 MHz
  • 4000 MHz
  • 4133 MHz
  • 3066 MHz
RAM technologyDDR4DDR4DDR4DDR4
Memory slots typeDIMMDIMMDIMMDIMM
Maximum RAM size64 GB64 GB64 GB64 GB
Number of memory slots4444
Unbuffered memoryyes
N/A
N/A
N/A
Memory channelsDualDualDual
N/A
Non-ECCyes
N/A
yes
N/A
ECC
N/A
N/A
yes
N/A

Audio properties

Audio codecRealtek ALC892Realtek ALC892Realtek ALC892Realtek ALC892
Audio output channels7.17.17.17.1

Technical details

Compatible processor seriesAMD AAMD RyzenAMD RyzenAMD Ryzen
Maximum number of processors1111
Maximum number of SMP processors1
N/A
1
N/A

Internal I/O ports

Number of COM connectors11
N/A
N/A
CPU fan connectoryesyesyes
N/A
12V power connectoryesyes
N/A
N/A
ATX Power connector (24-pin)YYY
N/A
TPM connectoryesyesyesyes
Number of SATA III connectors6466
Serial port headers
N/A
N/A
11
Number of chassis fan connectors
N/A
N/A
4
N/A
EPS power connector (8-pin)
N/A
N/A
yes
N/A
RGB LED pin header
N/A
N/A
yes
N/A
Front panel connector
N/A
N/A
yes
N/A

Rear panel I/O ports

S/PDIF out portyes
N/A
N/A
N/A
HDMI ports quantity1111
HDMI version1.4
N/A
N/A
N/A
Ethernet LAN (RJ-45) ports1111
PS/2 ports quantity111
N/A
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity11
N/A
N/A
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity1122
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4422
DisplayPorts quantity1
N/A
N/A
N/A
DisplayPort version1.2
N/A
N/A
N/A
VGA (D-Sub) ports quantity
N/A
111
DVI-D ports quantity
N/A
111
Microphone input
N/A
N/A
yes
N/A
Headphone outputs
N/A
N/A
1
N/A

Network

Wi-Fino
N/A
N/A
no
Ethernet LAN (Network)yesyesyesyes
LAN controllerRealtek 8111HRealtek RTL8111HRealtek RTL8111HRealtek 8111H
Ethernet interface typeGigabit EthernetGigabit EthernetGigabit EthernetGigabit Ethernet

Dimensions

Width12.01 in9.61 in12.01 in12.01 in
Depth9.61 in9.61 in9.61 in9.61 in

Often compared with ASRock B450 Steel Legend

Often compared with ASRock B450M PRO4

Often compared with MSI B450-A Pro MAX