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Motherboard
PRIME B650M-A II-CSM
ASUS
$26733
B850 GAMING X WIFI6E
Gigabyte
$20799
Chipset
AMD B650AMD B850
Socket
AM5AM5
Form Factor
Micro ATXATX
Max Memory
192 GB256 GB
Memory Type
DDR5DDR5
Memory Slots
44
ECC Memory Support
No No
PCIe x16 Slots
33
PCIe x16 4.0 Slots
33
M.2 Slots
22
M.2 Slot Specifics
  1. 2242-2260M (PCIe4.0x4)
  2. 2280M (PCIe4.0x4)
  3. 2242-2260M (PCIe4.0x4)
  4. 2280M (PCIe4.0x4)
  1. 2580-25110M (PCIe4.0x4)
  2. 2280M (PCIe4.0x4)
  3. 2580-25110M (PCIe4.0x4)
  4. 2280M (PCIe4.0x4)
  5. 2580-25110M (PCIe4.0x4)
  6. 2280M (PCIe4.0x4)
SATA Ports
40
USB 2.0 Headers
22
USB 3.2 Headers
11
USB 3.2 (Gen 2) Headers
10
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
Yes No
Color
DarkDark
Supported CPUs
AMD Ryzen 7000, 8000, 9000AMD Ryzen 7000, 8000, 9000
M.2 Heatsink/Shields
Yes Yes
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Comparison Analysis

Comparing the PRIME B650M-A II-CSM vs B850 GAMING X WIFI6E reveals distinct differences in their targeted use cases.

The B850 GAMING X WIFI6E is the more budget-friendly option, costing approximately $59 (29%) less than the PRIME B650M-A II-CSM.