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Motherboard
PRIME B650M-A II-CSM
ASUS
$26733
AMD B650 PRIME B650M-A WIFI II
ASUS
$29200
Chipset
AMD B650AMD B650
Socket
AM5AM5
Form Factor
Micro ATXMicro ATX
Max Memory
192 GB192 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. 2242-2260M (PCIe4.0x4)
  2. 2280M (PCIe4.0x4)
  3. 2242-2260M (PCIe4.0x4)
  4. 2280M (PCIe4.0x4)
SATA Ports
44
USB 2.0 Headers
22
USB 3.2 Headers
11
USB 3.2 (Gen 2) Headers
11
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 Yes
Color
DarkDark
Supported CPUs
AMD Ryzen 7000, 8000, 9000AMD Ryzen 7000, 8000, 9000
M.2 Heatsink/Shields
Yes No
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Comparison Analysis

Comparing the PRIME B650M-A II-CSM vs AMD B650 PRIME B650M-A WIFI II reveals distinct differences in their targeted use cases.

The PRIME B650M-A II-CSM is the more budget-friendly option, costing approximately $25 (9%) less than the AMD B650 PRIME B650M-A WIFI II.