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Motherboard
B850 Pro RS WiFi
ASRock
$13999
B850 PRO B850M-P WIFI
MSI
$15999
Chipset
AMD B850AMD B850
Socket
AM5AM5
Form Factor
ATXMicro ATX
Max Memory
256 GB256 GB
Memory Type
DDR5DDR5
Memory Slots
44
ECC Memory Support
No No
PCIe x16 Slots
24
PCIe x16 4.0 Slots
24
M.2 Slots
62
M.2 Slot Specifics
  1. 2280M (PCIe4.0x4)
  2. 2280M (PCIe4.0x4)
  3. 2230-2242M (PCIe4.0x4)
  4. 2280M (PCIe4.0x4)
  5. 2280M (PCIe4.0x4)
  6. 2280E (PCIe4.0x4)
  1. 2260-2280M (PCIe4.0x4)
  2. 2280M (PCIe4.0x4)
  3. 2260-2280M (PCIe4.0x4)
  4. 2280M (PCIe4.0x4)
  5. 2280M (PCIe4.0x4)
SATA Ports
40
USB 2.0 Headers
22
USB 3.2 Headers
22
USB 3.2 (Gen 2) Headers
01
WiFi
802.11 ax802.11 ax
Ethernet Speed
2.5 Gbps5 Gbps
Audio Chipset
RealtekRealtek
Audio Channels
7.17.1
Optical S/PDIF Out
No Yes
BIOS Flashback
No No
Color
DarkDark
Supported CPUs
AMD Ryzen 7000, 8000, 9000AMD Ryzen 7000, 8000, 9000
M.2 Heatsink/Shields
Yes-
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Comparison Analysis

Comparing the B850 Pro RS WiFi vs B850 PRO B850M-P WIFI reveals distinct differences in their targeted use cases.

The B850 Pro RS WiFi is the more budget-friendly option, costing approximately $20 (14%) less than the B850 PRO B850M-P WIFI.