ASUS Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard, Advanced AI Ready, DDR5

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💡 How to pick a motherboard
What to look for:
  • Socket matches your CPU (AM5, LGA1851, etc.)
  • Form factor fits your case (ATX, mATX, ITX)
  • RAM type (DDR4 or DDR5) and slot count
💰 Budget: $100-$150. Mid-range: $180-$280. High-end: $300+ with WiFi, PCIe 5.0
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ProductSocketForm FactorChipsetWiFiValuePrice
Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard, Advanced AI Ready, DDR5 Motherboard
Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard, Advanced AI Ready, DDR5
ASUS★★★★3.8🔥 DEAL -$10
AM5
mATX
B840
WiFi
B
$179.99
$170.08
2 stores
Specifications
SocketAM5
Form FactormATX
MemoryDDR5
RAM Slots4
Max RAM192
WiFiWiFi
Weight2.1 lbs
Model #PRIME B840M-A WIFI-CSM
UPC197105797154
PERFORMANCE
62%
Customer Reviews★★★★★5.0 · 1 review
★★★★★Good quality and easy setup
It works well and was easy enough to put into my case.
Alexis Hernandez · 2025-10-07 · via amazon
Buy Now
AmazonBEST
✓ In Stock
$170.08
Buy →
Newegg
✓ In Stock
$183.99
Buy →
Best Buy
Not tracked at this retailer
N/A
VALUE SCORE
B
14.6
Good value
Performance (62%) ÷ Price ($170.08) = 14.6
S ≥28 · A ≥20 · B ≥14 · C ≥8 · D <8
FUTURE-PROOFING
✅AM5 — supported through 2027+
✅DDR5 memory
💰
Below MSRP
Was $179.99 → $170.08
Save $13.91 at amazon vs newegg
6% off
Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard, Advanced AI Ready, DDR5 Motherboard
CONSIDER INSTEAD
SAVE $99.0900000000000297% of this product's perf
A520M S2H (AMD Ryzen AM4/MicroATX/4+3 Phases Digital PWM/Gigabyte Gaming GbE LAN/NVMe PCIe 3.0 x4 M.2/3 Display Interfaces/Q-Flash Plus/RGB Fusion 2.0/Motherboard)
Socket
AM4
Chipset
A520
Form
ATX
WiFi
None
$70.99
+12% FASTER$60.09000000000002 cheaper
ASUS - TUF GAMING B650-PLUS WIFI (Socket AM5) AMD B650 ATX DDR5 Wi-Fi 6 Motherboard - Black
Socket
AM5
Chipset
B650
Form
ATX
WiFi
WiFi 6
$109.99