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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SORTVIEW
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 -$15
AM5
mATX
B840
WiFi
B
$179.99
$164.99
2 stores
Specifications
asinB0DPLPL5KJ
reviews8
UPC197105797154
Model #PRIME B840M-A WIFI-CSM
Weight2.1 lbs
SocketAM5
MemoryDDR5
Max RAM192
RAM Slots4
Form FactormATX
WiFiWiFi
value33
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
$164.99
Buy →
Newegg
✓ In Stock
$200.83
Buy →
Best Buy
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MSI
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Newegg (Open Box)
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VALUE SCORE
B
15.0
Good value
Performance (62%) ÷ Price ($164.99) = 15.0
S ≥28 · A ≥20 · B ≥14 · C ≥8 · D <8
FUTURE-PROOFING
✅AM5 — supported through 2027+
✅DDR5 memory
💰
Below MSRP
Was $179.99 → $164.99
Save $35.84 at amazon vs newegg
8% off
Prime B840M-A WiFi-CSM AMD AM5 B840 mATX Motherboard, Advanced AI Ready, DDR5 Motherboard
CONSIDER INSTEAD
SAVE $84.00000000000001132% of this product's perf
B850 Eagle WIFI6E AMD AM5 ATX Motherboard, Support AMD Ryzen 9000/8000/7000 Series, DDR5
Socket
AM5
Chipset
B850
Form
ATX
WiFi
WiFi 6E
$80.99
+20% FASTER$84.00000000000001 cheaper
B850 Eagle WIFI6E AMD AM5 ATX Motherboard, Support AMD Ryzen 9000/8000/7000 Series, DDR5
Socket
AM5
Chipset
B850
Form
ATX
WiFi
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$80.99