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ASRock · AM4 · B450M

ASROCK B450M PRO4 R2.0

Micro-ATX · DDR4 · 4 DIMMs · 6-phase VRM

Quality
38
VRM
13
Value
91
Amazon
$80
ASROCK B450M PRO4 R2.0
View ASROCK B450M PRO4 R2.0 Gallery in high resolution
$80
Unavailable Updated 3 months ago
Overall38.0
VRM13.0
Chipset58.0
Expansion / storage37.0
Connectivity37.0
Audio45.0
Quality / price90.7
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Written analysis

ASROCK B450M PRO4 R2.0 at a glance

The ASROCK B450M PRO4 R2.0 uses the Micro-ATX form factor, AM4 socket, and B450M chipset. This is a balanced mainstream platform: enough expansion and connectivity for a performance PC without paying only for flagship extras.

Memory support is DDR4 across 4 DIMM slots, with up to 128 GB and rated overclocked speeds up to 3200 MT/s. ECC modules are accepted, subject to CPU support. XMP / EXPO memory-profile support is recorded for easier tuning.

Best fit: a budget or straightforward office build using a lower-power CPU and a small number of add-in devices.

Power delivery

The calculated VRM score is 13.0, placing the power delivery in the basic class. The board lists 6 CPU power phases, 42 A power stages in a 6+2 layout. CPU power input is listed as 1. Keep it paired with lower-power processors and avoid sustained overclocked loads.

Expansion and storage

The expansion and storage score is 37.0: focused on the essentials. The platform supports PCIe 3.0. Physical expansion includes 2 ×16 slots, and 1 ×1.

On-board storage consists of 2 M.2 slots and 4 SATA ports. Supported M.2 lengths are listed as 2230, 2242, 2260, 2280. The two-slot layout covers a typical OS-and-games or OS-and-project-drive setup.

Connectivity and rear I/O

The connectivity score is 37.0, rated essential. There is no recorded onboard Wi-Fi ; wired networking is PCIE x1 Gigabit LAN 10/100/1000 Mb/s at up to 1000 Mbps. The recorded USB provision is 8 rear connections; a front-panel total is not recorded. The specification sheet below separates every USB speed and connector type.

Display connectivity includes HDMI 1.4. These motherboard outputs require a processor with integrated graphics.

Audio

The audio score is 45.0. This is a standard onboard solution using Realtek ALC892/897 Audio Codec. It covers normal gaming and communication; demanding headphones or production work still benefit from an external interface. The rear panel has 3 analogue jacks.

Buying verdict

Overall quality is 38.00, a basic but usable result for office, media, and budget gaming systems.

At the recorded Amazon price, the quality-to-price score is 90.7—an excellent value relative to the other boards in the catalog.

Board data

Full specifications

Platform, expansion, storage, rear I/O, internal headers, networking, audio, and board controls in one sheet.

General

Manufacturer
ASRock
Motherboard
ASROCK B450M PRO4 R2.0
Chipset / socket
B450M / AM4
Form factor
Micro-ATX
Launch price
—
Amazon price
$80
Availability
Unavailable
Price updated
3 months ago

VRM

CPU phases
6 (42 A)
Power design
6+2
EPS connector
1

Memory

Type / slots
DDR4 / 4 DIMMs
Max capacity / OC
128 GB / 3200 MT/s
Per DIMM
32 GB
XMP / EXPO
Yes
ECC
Modules supported

PCIe

Supported version
PCIe 3.0
x16 physical
2
x16 Gen 3
1
x1 physical
1

Storage

M.2 slots
2
M.2 lengths
2230, 2242, 2260, 2280
SATA ports
4

Display outputs

HDMI
Yes · 1.4 · 4096x2160 @ 24Hz
DisplayPort
No
USB-C DisplayPort
No

USB

Rear USB 2.0
2
Rear USB 3.2 Gen 1 Type-A 5 Gbps
4
Rear USB 3.2 Gen 2 Type-A 10 Gbps
1
Rear USB 3.2 Gen 2 Type-C 10 Gbps
1
Header USB 2.0
4
Header USB 3.2 Gen 1 Type-A 5 Gbps
2

Networking

Ethernet
PCIE x1 Gigabit LAN 10/100/1000 Mb/s
LAN ports
1
LAN speed
1000 Mbps
Wi-Fi
Not included
Bluetooth
No

Audio

Chipset
Realtek ALC892/897 Audio Codec
Analog jacks
3
Gold-plated jacks
No
Optical S/PDIF
No
Spatial audio
No

Additional information

Memory notes
Supports DDR4 un-buffered memory with speeds of 3200 / 2933 / 2667 / 2400 / 2133. Overclocking is supported on certain CPUs (Pinnacle Ridge, Summit Ridge, Raven Ridge). ECC support is dependent on the CPU model; for example, it is supported with Vermeer CPUs but not with Picasso or Raven Ridge CPUs. The DIMM slots feature 15μ Gold Contact.
Display notes
Features Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU, with actual support varying by CPU. Supports DirectX 12 and Pixel Shader 5.0. Shared memory is 2GB by default, with a maximum of 16GB (requires 32GB system memory). Provides three graphics output options: D-Sub (max 1920x1200 @ 60Hz), DVI-D (max 1920x1200 @ 60Hz), and HDMI. Supports Triple Monitor setups. The HDMI 1.4 port supports Auto Lip Sync, Deep Color (12bpc), xvYCC, HBR, and 4K Ultra HD (UHD) playback. HDCP 1.4 is supported on both DVI-D and HDMI 1.4 ports.
Expansion notes
The primary PCIe 3.0 x16 slot (PCIE2) speed is dependent on the installed CPU: x16 mode with Vermeer/Matisse/Cezanne/Renoir/Summit Ridge/Pinnacle Ridge CPUs, x8 mode with Picasso/Raven Ridge CPUs, and x4 mode with Athlon series CPUs. There is a second physical x16 slot (PCIE3) that operates at PCIe 2.0 x4 mode. An additional PCIe 2.0 x1 slot is also present. Supports NVMe SSD as boot disks and AMD Quad CrossFireX.
M2_1
3.0 4 · 2242, 2260, 2280 — Operates at PCIe Gen3 x4 (32 Gb/s) with Vermeer, Matisse, Cezanne, Renoir, Picasso, Summit Ridge, Raven Ridge and Pinnacle Ridge CPUs. Operates at PCIe Gen3 x2 (16 Gb/s) with Athlon series APUs.
M2_2
· SATA · 2230, 2242, 2260, 2280 — M2_2 and SATA3_3 share lanes. If either one of them is in use, the other one will be disabled.
RAID
SATA (RAID 0, RAID 1, RAID 10)
Storage notes
SATA connectors support NCQ, AHCI and Hot Plug. Supports NVMe SSD as boot disks. Supports ASRock U.2 Kit.
USB notes
All USB ports and headers support ESD Protection.
Audio notes
7.1 CH HD Audio with Content Protection. Supports Surge Protection.
Networking notes
PCIE x1 Gigabit LAN. The RJ-45 port has an LED indicator (ACT/LINK LED and SPEED LED).
Fan / RGB headers
1 CPU · — OPT · 1 AIO · 3 chassis · 1 ARGB · 2 RGB
Other headers
Front audio · System panel · TPM
Dimensions
24.4 cm x 24 cm

Extracted notes sit here. Official manufacturer copy is at the bottom of the page.

Amazon

Price history

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Vendor copy

Official manufacturer data

Raw manufacturer text kept for reference. Structured specs above are extracted from this copy and are the source for scores and tables.

Memory

- Dual Channel DDR4 Memory Technology
- 4 x DDR4 DIMM Slots
- AMD Ryzen series CPUs (Vermeer) support DDR4 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
- AMD Ryzen series CPUs (Matisse) support DDR4 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
- AMD Ryzen series APUs (Cezanne) support DDR4 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
- AMD Ryzen series APUs (Renoir) support DDR4 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
- AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3200+(OC) / 2933(OC) / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
- AMD Ryzen series CPUs (Picasso) support DDR4 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory*
- AMD Ryzen series CPUs (Summit Ridge) support DDR4 3200+(OC) / 2933(OC) / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
- AMD Ryzen series CPUs (Raven Ridge) support DDR4 3200+(OC) / 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory
- Max. capacity of system memory: 128GB**
- Supports Extreme Memory Profile (XMP) memory modules
- 15μ Gold Contact in DIMM Slots

Graphics

- Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU*
- DirectX 12, Pixel Shader 5.0
- Shared memory default 2GB. Max Shared memory supports up to 16GB.**
- Three graphics output options: D-Sub, DVI-D and HDMI
- Supports Triple Monitor
- Supports HDMI 1.4 with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz
- Supports DVI-D with max. resolution up to 1920x1200 @ 60Hz
- Supports D-Sub with max. resolution up to 1920x1200 @ 60Hz
- Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 1.4 Port (Compliant HDMI monitor is required)
- Supports HDCP 1.4 with DVI-D and HDMI 1.4 Ports
- Supports 4K Ultra HD (UHD) playback with HDMI 1.4 Port

*Actual support may vary by CPU

**The Max shared memory 16GB requires 32GB system memory installed.

Expansion slots

AMD Ryzen series CPUs (Vermeer, Matisse, Cezanne, Renoir, Summit Ridge and Pinnacle Ridge)
- 1 x PCI Express 3.0 x16 Slot (PCIE2: x16 mode)*
- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)
AMD Ryzen series CPUs (Picasso, Raven Ridge)
- 1 x PCI Express 3.0 x16 Slot (PCIE2: x8 mode)*
- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)
AMD Athlon series CPUs
- 1 x PCI Express 3.0 x16 Slot (PCIE2: x4 mode)*
- 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode)

- 1 x PCI Express 2.0 x1 Slot
- Supports AMD Quad CrossFireX™ and CrossFireX™

*Supports NVMe SSD as boot disks

Storage

- 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug*
- 1 x Ultra M.2 Socket (M2_1), supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32 Gb/s) (with Vermeer, Matisse, Cezanne, Renoir, Picasso, Summit Ridge, Raven Ridge and Pinnacle Ridge) or Gen3 x2 (16 Gb/s) (with Athlon series APU)**
- 1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280 M.2 SATA3 6.0 Gb/s module

*M2_2 and SATA3_3 share lanes. If either one of them is in use, the other one will be disabled.

**Supports NVMe SSD as boot disks
Supports ASRock U.2 Kit

Internal I/O

- 1 x COM Port Header
- 1 x TPM Header
- 1 x Chassis Intrusion Header
- 1 x Power LED and Speaker Header
- 1 x RGB LED Header*
- 1 x Addressable LED Header**
- 1 x AMD Fan LED Header***
- 1 x CPU Fan Connector (4-pin)****
- 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)*****
- 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)******
- 1 x 24 pin ATX Power Connector
- 1 x 8 pin 12V Power Connector
- 1 x Front Panel Audio Connector
- 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
- 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)

*Supports in total up to 12V/3A, 36W LED Strip

**Supports in total up to 5V/3A, 15W LED Strip

***The AMD Fan LED Header supports LED strips of maximum load of 3A (36W) and length up to 2.5M.

****The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.

*****The CPU/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.

******The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP and CHA_FAN3/WP can auto detect if 3-pin or 4-pin fan is in use.

Rear I/O

- 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 (10 Gb/s) (Supports ESD Protection)
- 1 x USB 3.2 Gen2 Type-C Port (10 Gb/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

Audio

- 7.1 CH HD Audio with Content Protection (Realtek ALC892/897 Audio Codec)
- Supports Surge ProtectionA8:XFD8

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