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Motherboard
B850 Pro RS WiFi
ASRock
$13999
B850I Lightning WiFi Mini ITX
ASRock
$17999
Chipset
AMD B850AMD B850
Socket
AM5AM5
Form Factor
ATXMini-ITX
Max Memory
256 GB128 GB
Memory Type
DDR5DDR5
Memory Slots
42
ECC Memory Support
No No
PCIe x16 Slots
21
PCIe x16 4.0 Slots
21
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. 2280M (PCIe4.0x4)
  2. 2280M (PCIe4.0x4)
  3. 2280E (PCIe4.0x4)
SATA Ports
42
USB 2.0 Headers
21
USB 3.2 Headers
21
USB 3.2 (Gen 2) Headers
01
WiFi
802.11 ax802.11 ax
Ethernet Speed
2.5 Gbps2.5 Gbps
Audio Chipset
RealtekRealtek
Audio Channels
7.17.1
Optical S/PDIF Out
No No
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 B850I Lightning WiFi Mini ITX reveals distinct differences in their targeted use cases.

The B850 Pro RS WiFi is the more budget-friendly option, costing approximately $40 (29%) less than the B850I Lightning WiFi Mini ITX.