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MSI · AM5 · B850

PRO B850-P WIFI

ATX · DDR5 · 4 DIMMs · 12-phase VRM · Wi-Fi 7 (802.11be)

Quality
64
VRM
37
Value
64
Amazon
$190
PRO B850-P WIFI
View PRO B850-P WIFI Gallery in high resolution
$190
Available Updated 3 days, 19 hours ago Prime FBA
Overall64.0
VRM37.0
Chipset81.0
Expansion / storage91.0
Connectivity68.0
Audio43.0
Quality / price64.0
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Written analysis

PRO B850-P WIFI at a glance

The PRO B850-P WIFI uses the ATX form factor, AM5 socket, and AMD B850 chipset. This is a balanced mainstream platform: enough expansion and connectivity for a performance PC without paying only for flagship extras.

Memory support is DDR5 across 4 DIMM slots, with up to 256 GB and rated overclocked speeds up to 8200 MT/s.

Best fit: a performance gaming and productivity PC that needs a balanced board without workstation-class excess.

Power delivery

The calculated VRM score is 37.0, placing the power delivery in the entry-level class. The board lists 12 CPU power phases, 60 A power stages in a 12 + 2 + 1 layout. CPU power input is listed as 2. It is best paired with mainstream 65–105 W-class processors and good case airflow.

Expansion and storage

The expansion and storage score is 91.0: exceptionally well equipped . The platform supports PCIe 5.0. Physical expansion includes 4 ×16 slots.

On-board storage consists of 3 M.2 slots and 4 SATA ports. Supported M.2 lengths are listed as 22110, 2280, 2260. That is enough NVMe capacity for a multi-drive gaming or creator setup without immediately relying on an add-in card.

Connectivity and rear I/O

The connectivity score is 68.0, rated adequate . Wireless networking is Wi-Fi 7 (802.11be) ; wired networking is Realtek ® 8126VB 5G LAN at up to 5000 Mbps. Bluetooth 5.4 is included. The recorded USB provision is 8 rear connections and 9 front-panel connections. The specification sheet below separates every USB speed and connector type.

Display connectivity includes HDMI 2.1. These motherboard outputs require a processor with integrated graphics.

Audio

The audio score is 43.0. This is a standard onboard solution using Realtek ® ALC897. It covers normal gaming and communication; demanding headphones or production work still benefit from an external interface. Optical S/PDIF is present for digital audio equipment.

Buying verdict

Overall quality is 64.00, a mainstream result. The essential platform features are covered, while premium I/O and tuning extras are more selective.

At the recorded Amazon price, the quality-to-price score is 64.0—a balanced value for its feature class.

Board data

Full specifications

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

General

Manufacturer
MSI
Motherboard
PRO B850-P WIFI
Chipset / socket
AMD B850 / AM5
Form factor
ATX
Launch price
—
Amazon price
$190
Availability
In stock
Price updated
3 days, 19 hours ago

VRM

CPU phases
12 (60 A)
Power design
12 + 2 + 1
EPS connector
2

Memory

Type / slots
DDR5 / 4 DIMMs
Max capacity / OC
256 GB / 8200 MT/s
Per DIMM
64 GB
XMP / EXPO
Not recorded

PCIe

Supported version
PCIe 5.0
x16 physical
4
x16 Gen 5
1
x16 Gen 4
1
x16 Gen 3
2

Storage

M.2 slots
3
M.2 lengths
22110, 2280, 2260
SATA ports
4

Display outputs

HDMI
Yes · 2.1 · 4K 60Hz
DisplayPort
No
USB-C DisplayPort
No

USB

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

Networking

Ethernet
Realtek ® 8126VB 5G LAN
LAN ports
1
LAN speed
5000 Mbps
Wi-Fi
Wi-Fi 7 (802.11be)
Wi-Fi bandwidth
320MHz; up to 5.8Gbps
Bands
['2.4GHz', '5GHz', '6GHz']
Bluetooth
5.4

Audio

Chipset
Realtek ® ALC897
Analog jacks
—
Gold-plated jacks
No
Optical S/PDIF
Yes
Spatial audio
No

Buttons

BIOS flashback
Yes
Clear CMOS
Yes
Q-Flash Plus
No
Smart button
No
Onboard start / reset
No

Additional information

CPU support
Supports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors, Socket AM5,
OS support
Support for Windows ® 11 64-bit,
Memory notes
4x DDR5 UDIMM (non-ECC, un-buffered). Supports AMD POR Speed and JEDEC speeds, memory overclocking and AMD EXPO. Ryzen 9000 Series per-configuration OC guidance: 1DPC 1R up to 8200+ MT/s; 1DPC 2R up to 6400+ MT/s; 2DPC 1R up to 6400+ MT/s; 2DPC 2R up to 6000+ MT/s. CUDIMM supported in clock driver bypass mode only; CUDIMM support and POR boot frequency may vary by CPU series. Manual overclocking may be required after boot; certain CPUs may fail to boot until BIOS updates improve compatibility. DIMM slots have double-sided latches. Memory compatibility and supported speeds depend on CPU and memory configuration — see the Memory Compatibility List on the product Support page (https://www.msi.com/support/) for details.
Display notes
1x HDMI port supporting HDMI 2.1 with a maximum of 4K@60Hz. Video output available only when using processors with integrated graphics; graphics specifications may vary depending on the installed CPU.
Expansion notes
4x PCI-E x16 slot, PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU), PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset), PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset), PCI_E4 Gen PCIe 3.0 supports up to x1 (From Chipset), , PCI_E1 slot, • Supports PCIe 5.0 x16 (For Ryzen™ 9000/ 7000 Series processors), • Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors), • Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processor), , * PCI_E2, PCI_E3 & PCI_E4 share the bandwidth, PCI_E3 slot will run at x2 speed when installing devices in the PCI_E2 or PCI_E4 slot.
M2_1
PCIe 5.0 x4 (Ryzen 9000/7000); PCIe 4.0 x4 (Ryzen 8000) 4 · 2280, 2260 · From CPU — Speed depends on CPU: PCIe 5.0 x4 with Ryzen 9000/7000; PCIe 4.0 x4 with Ryzen 8000
M2_2
PCIe 4.0 x4 (Ryzen 9000/7000); PCIe 3.0 x4 (Ryzen 8700/8600/8400); PCIe 3.0 x2 (Ryzen 8500/8300) 4 · 22110, 2280 · From CPU — Speed depends on CPU: PCIe 4.0 x4 with Ryzen 9000/7000; PCIe 3.0 x4 with Ryzen 8700/8600/8400; PCIe 3.0 x2 with Ryzen 8500/8300
M2_3
PCIe 4.0 x2 2 · 2280, 2260 · From Chipset
RAID
SATA / PCIe (RAID 0, RAID 1)
Storage notes
3x M.2 total (M2_1 and M2_2 from CPU; M2_3 from chipset). 4x SATA 6G. M.2 slot speeds for M2_1 and M2_2 vary by CPU series as detailed per-slot. Supports RAID 0 and RAID 1 for both SATA and M.2 NVMe devices. Refer to manual for M.2 SSD heatsink restrictions.
USB notes
Primary USB data used for counts. Internal_IO and Back_Panel_IO also list USB entries (Internal: 4x USB2.0, 4x USB 5Gbps Type-A, 1x USB 5Gbps Type-C; Back panel repeats various USB A/C and shows buttons/connectors) but were not counted per instructions. No USB Power Delivery wattage or Thunderbolt/USB4 indicated in primary data.
Audio notes
7.1-Channel High Definition Audio; mentions 'Audio connectors' but no specific jack count provided.
Networking notes
Wireless module pre-installed in M.2 (Key-E) slot; supports MU-MIMO TX/RX, MLO, 4KQAM; 6GHz band support may depend on country regulations; Wi-Fi 7 readiness and Bluetooth 5.4 availability tied to Windows 11 version 24H2. Antenna connector count not specified.
Button notes
Includes Flash BIOS (BIOS Flashback) button. Rear I/O highlights: HDMI, S/PDIF OUT, USB 10Gbps Type-A, USB 10Gbps Type-C, USB 5Gbps Type-A, USB 5Gbps Type-C, USB 2.0, 5Gb LAN, Wi‑Fi/Bluetooth, and audio connectors. Internal headers and connectors: 1x ATX_PWR, 2x CPU_PWR, 1x PCIE_PWR (8-pin), 1x CPU Fan, 1x Combo Fan (Pump/Sys Fan), 4x System Fan, 2x Front Panel (JFP), 1x Chassis Intrusion (JCI), 1x Front Audio (JAUD), 1x Com Port (JCOM), 1x Tuning Controller (JDASH), 3x Addressable V2 RGB LED (JARGB_V2), 1x RGB LED (JRGB), 1x TPM header (supports TPM 2.0). USB counts: 4x USB 2.0 ports, 4x USB 5Gbps Type-A ports, 1x USB 5Gbps Type-C port.
Fan / RGB headers
1 CPU · — OPT · 1 AIO · 4 chassis · 3 ARGB · 1 RGB
Other headers
Front audio · System panel · TPM
Accessories
,
Dimensions
ATX, 243.84mmx304.8mm,

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

Amazon

Price history

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VRM fit

VRM-appropriate CPUs

AM5 processors whose TDP sits in this board’s VRM window. Socket match is required; chipset extras still matter on sTR5. This is a power-delivery filter, not a ranked CPU guide.

Open AM5 CPUs in the CPU table

Discussion

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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.

CPU support

Supports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors, Socket AM5,

Memory

4x DDR5 UDIMM, Maximum Memory Capacity 256GB, Memory Support DDR5 8200 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s, Ryzen™ 9000 Series Processors max. overclocking frequency:,
• 1DPC 1R Max speed up to 8200+ MT/s,
• 1DPC 2R Max speed up to 6400+ MT/s,
• 2DPC 1R Max speed up to 6400+ MT/s,
• 2DPC 2R Max speed up to 6000+ MT/s, , Supports AMD POR Speed and JEDEC Speed,
Supports Memory Overclocking and AMD EXPO TM,
Supports Dual-Channel mode,
Supports Non-ECC, Un-buffered memory,
Supports CUDIMM, Clock Driver bypass mode only*, , * CUDIMM support and POR boot frequency may vary by CPU series, with manual overclocking available after boot. Certain CPUs may fail to boot, but future BIOS updates will improve compatibility., • The DIMM slots on this motherboard have double-sided latches.,
• Memory compatibility and supported speeds can vary depending on the CPU and memory configuration. For detailed information, please refer to the Memory Compatibility List available on the product’s Support page or visit https://www.msi.com/support/.,

Graphics

1x HDMI™, Support HDMI TM 2.1, maximum resolution of 4K 60Hz*, *Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.,

Expansion slots

4x PCI-E x16 slot, PCI_E1 Gen PCIe 5.0 supports up to x16 (From CPU), PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset), PCI_E3 Gen PCIe 4.0 supports up to x4 (From Chipset), PCI_E4 Gen PCIe 3.0 supports up to x1 (From Chipset), ,
PCI_E1 slot,
• Supports PCIe 5.0 x16 (For Ryzen™ 9000/ 7000 Series processors),
• Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors),
• Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processor), ,
* PCI_E2, PCI_E3 & PCI_E4 share the bandwidth, PCI_E3 slot will run at x2 speed when installing devices in the PCI_E2 or PCI_E4 slot.,

Storage

3x M.2, M.2_1 Source (From CPU) supports up to PCIe 5.0 x4 , supports 2280/2260 devices, M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 22110/2280 devices, M.2_3 Source (From Chipset) supports up to PCIe 4.0 x2 , supports 2280/2260 devices, 4x SATA 6G, ,
M2_1 slot,
• Supports up to PCIe 5.0 x4 (For Ryzen™ 9000/ 7000 Series processors),
• Supports up to PCIe 4.0 x4 (For Ryzen™ 8000 Series processors), ,
M2_2 slot,
• Supports up to PCIe 4.0 x4 (For Ryzen™ 9000/ 7000 Series processors),
• Supports up to PCIe 3.0 x4 (For Ryzen™ 8700/ 8600/ 8400 Series processors),
• Supports up to PCIe 3.0 x2 (For Ryzen™ 8500/ 8300 Series processors), , *Please refer to the manual for M.2 SSD heatsink restrictions.,, Supports RAID 0 and RAID 1 for SATA storage devices,
Supports RAID 0 and RAID 1 for M.2 NVMe storage devices,

USB

4x USB 2.0 (Rear), 4x USB 2.0 (Front), 1x USB 5Gbps Type A (Rear), 4x USB 5Gbps Type A (Front), 1x USB 5Gbps Type C (Front), 1x USB 10Gbps Type A (Rear), 2x USB 10Gbps Type C (Rear),

Internal I/O

1x Power Connector(ATX_PWR), 2x Power Connector(CPU_PWR), 1x Power Connector(PCIE_PWR 8pin), 1x CPU Fan, 1x Combo Fan (Pump_Sys Fan), 4x System Fan, 2x Front Panel (JFP), 1x Chassis Intrusion (JCI), 1x Front Audio (JAUD), 1x Com Port (JCOM), 1x Tuning Controller connector(JDASH), 3x Addressable V2 RGB LED connector (JARGB_V2), 1x RGB LED connector(JRGB), 1x TPM pin header(Support TPM 2.0), 4x USB 2.0 ports, 4x USB 5Gbps Type A ports, 1x USB 5Gbps Type C ports,

Rear I/O

Clear CMOS Button USB 10Gbps Type-A USB 2.0 5G LAN Wi-Fi / Bluetooth Audio connectors Flash BIOS Button HDMI™ USB 10Gbps Type-C USB 5Gbps Type-A USB 10Gbps Type-C S/PDIF OUT,

Wireless

Wi-Fi 7, The Wireless module is pre-installed in the M.2 (Key-E) slot,
Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz/ 6GHz* (320MHz) up to 5.8Gbps,
Supports 802.11 a/ b/ g/ n/ ac/ ax/ be, , Supports Bluetooth ® 5.4**, MLO, 4KQAM, , * 6GHz band support may depend on every country’s regulations and Wi-Fi 7 will be ready in Windows 11 version 24H2.,
** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor’s website for details. Bluetooth 5.4 will be ready in Windows 11 version 24H2.,

Audio

Realtek ® ALC897, 7.1-Channel High Definition Audio,

Accessories

,

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