MSI B840 Gaming Plus WiFi Motherboard, ATX - Supports AMD Ryzen 9000/8000 / 7000 Processors, AM5 - DDR5 Memory Boost 8000...

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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
B840 Gaming Plus WiFi Motherboard, ATX - Supports AMD Ryzen 9000/8000 / 7000 Processors, AM5 - DDR5 Memory Boost 8000... Motherboard
B840 Gaming Plus WiFi Motherboard, ATX - Supports AMD Ryzen 9000/8000 / 7000 Processors, AM5 - DDR5 Memory Boost 8000...
MSI★★★★4.2🔥 DEAL -$9
AM5
ATX
B840
WiFi
B
$169.99
$161.49
3 stores
Specifications
SocketAM5
Form FactorATX
MemoryDDR5
RAM Slots3
Max RAM256
WiFiWiFi
Weight3.0 lbs
Model #B840 Gaming Plus WiFi
UPC824142392966
PERFORMANCE
69%
Customer Reviews★★★★★5.0 · 5 reviews
★★★★★The MSI MPG X870E CARBON WIFI motherboard
The MSI MPG X870E CARBON WIFI motherboard has been one of the best parts of my build. Everything about it feels premium, from the design to the performance and overall stability. Setup was very easy, the BIOS is clean and simple to navigate, and it works perfectly with high-end AM5 processors and DDR5 memory. Gaming performance has been excellent, and the board handles multitasking, heavy workloads, and high-speed components without any problems. The Wi-Fi 7 support is a huge plus, connection speeds are fast and stable, and there are plenty of ports and expansion options for future upgrades. It also has great cooling across the board, which helps keep temperatures under control during long gaming sessions. The carbon-black design and RGB lighting give the whole PC a very clean and high-end look. Overall, it feels like a powerful, reliable motherboard built for serious gaming and next-generation performance.
EdansO · 2026-05-06 · via bestbuy
★★★★★Love the Look and MSI Center is very easy to use
TItle says it all. I really enjoy the features of MSI Center. I use it on my desktop and laptop. I love the look as well no issues
JUSTINO · 2026-04-20 · via bestbuy
★★★★★High end motherboard with great BIOS
I was looking for a top tier motherboard and the MSI Carbon checked every box. Super easy to build with, great features, and the BIOS is by far the cleanest and easiest I’ve used.
Bizj · 2026-04-09 · via bestbuy
★★★★★Great motherboard
Works really well and love to the signed on the motherboard
MichaelM · 2026-03-31 · via bestbuy
★★★★★Grwat mobo
Great motherboard. I am coming from an Asus x670e to MSI x870e. Great features.
Jbdred · 2026-02-20 · via bestbuy
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VALUE SCORE
B
17.1
Good value
Performance (69%) ÷ Price ($161.49) = 17.1
S ≥28 · A ≥20 · B ≥14 · C ≥8 · D <8
FUTURE-PROOFING
✅AM5 — supported through 2027+
✅DDR5 memory
💰
Below MSRP
Was $169.99 → $161.49
Save $8.50 at amazon vs newegg
5% off
B840 Gaming Plus WiFi Motherboard, ATX - Supports AMD Ryzen 9000/8000 / 7000 Processors, AM5 - DDR5 Memory Boost 8000... Motherboard
CONSIDER INSTEAD
SAVE $65.50000000000001122% of this product's perf
MSI - Z790 GAMING PLUS WIFI (Socket LGA 1700) Intel Z790 ATX DDR5 Wi-Fi 6E Motherboard - Black
Socket
LGA1700
Chipset
Z790
Form
ATX
WiFi
WiFi 6
$95.99
+15% FASTER$65.50000000000001 cheaper
MSI - Z790 GAMING PLUS WIFI (Socket LGA 1700) Intel Z790 ATX DDR5 Wi-Fi 6E Motherboard - Black
Socket
LGA1700
Chipset
Z790
Form
ATX
WiFi
WiFi 6
$95.99