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Product comparison · 2 motherboards

ASUS PRIME B840M-A-CSM vs ASUS TUF GAMING B850M-PLUS WIFI

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  • 69specifications compared
  • 14differ
  • 55identical
  • 30known for one product only

Key differences

  • USB 3.2 Gen 1 (3.1 Gen 1) connectors
    • 2
    • 1
  • USB 3.2 Gen 2 (3.1 Gen 2) connectors
    • 0
    • 1
  • Number of chassis fan connectors
    • 2
    • 3
  • USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
    • 0
    • 4
  • USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity
    • 1
    • 0
  • USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
    • 2
    • 3
  • Wi-Fi
    • No
    • Yes
  • Top Wi-Fi standard
    • Not available
    • Wi-Fi 6E (802.11ax)

Side by side

Differences highlightedShow differences only
99 specifications
A

ASUS

PRIME B840M-A-CSMView product
B

ASUS

TUF GAMING B850M-PLUS WIFIView product
Processoridentical
Processor manufacturerAMDAMD
Processor socketSocket AM5Socket AM5
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 SeriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5Socket AM5
Memoryidentical
Supported memory typesDDR5-SDRAMDDR5-SDRAM
Number of memory slots44
Memory slots typeDIMMDIMM
Memory channelsDual-channelDual-channel
ECC сompatibilityECC & Non-ECCECC & Non-ECC
Supported memory clock speed (max)Known for one7600 MHz
Maximum internal memory192 GB192 GB
Unbuffered memoryYesYes
Storage controllersidentical
Supported storage drive typesHDD & SSDHDD & SSD
Supported storage drive interfacesM.2, SATA IIIM.2, SATA III
Number of HDDs supported44
Number of storage drives supported77
RAID supportYesYes
RAID levels0, 1, 5, 100, 1, 5, 10
Graphicsidentical
Parallel processing technology supportNot supportedNot supported
Maximum resolutionKnown for one7680 x 4320 pixels
On-board graphics cardKnown for oneNo
Internal I/O3 differ
USB 2.0 connectors22
USB 3.2 Gen 1 (3.1 Gen 1) connectorsDiffers21
USB 3.2 Gen 2 (3.1 Gen 2) connectorsDiffers01
Number of SATA III connectors44
S/PDIF out connectorYesYes
Front panel audio connectorYesYes
Front panel connectorYesYes
ATX Power connector (24-pin)YesYes
CPU fan connectorYesYes
Number of CPU fan connectorsKnown for one2
Number of chassis fan connectorsDiffers23
EPS power connector (8-pin)Known for oneYes
Number of EPS power connectors (8-pin)Known for one1
Number of COM connectors11
TPM connectorKnown for oneYes
RGB LED pin headerKnown for oneYes
Number of RGB LED pin headersKnown for one3
Number of SATA II connectorsKnown for one0
Number of SATA connectorsKnown for one0
Chassis intrusion connectorKnown for oneYes
12V power connectorKnown for oneYes
Rear panel I/O ports3 differ
USB 2.0 ports quantity44
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers04
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantityDiffers10
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityDiffers23
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity00
Ethernet LAN (RJ-45) ports11
VGA (D-Sub) ports quantity00
HDMI ports quantity11
HDMI versionKnown for one2.1
DVI-D ports quantity00
DisplayPorts quantity11
DisplayPort versionKnown for one1.4
Headphone outputsKnown for one1
Line-inKnown for oneYes
USB 3.2 Gen 2x2 Type-C ports quantityKnown for one1
WiFi-AP antenna jackKnown for one1
Network2 differ
Ethernet LANYesYes
Ethernet interface type2.5 Gigabit Ethernet2.5 Gigabit Ethernet
Wi-FiDiffersNoYes
Top Wi-Fi standardDiffersNot availableWi-Fi 6E (802.11ax)
Wi-Fi standardsKnown for oneWi-Fi 6E (802.11ax)
BluetoothKnown for oneYes
Bluetooth versionKnown for one5.3
Features2 differ
Component forPCPC
Motherboard form factormicro ATXmicro ATX
Motherboard chipset familyAMDAMD
Motherboard chipsetDiffersAMD B840AMD B850
Audio output channels7.1 channels7.1 channels
Product colourDiffersGreyBlack
Power source typeKnown for oneATX
Windows operating systems supportedWindows 10 x64, Windows 11Windows 10 x64, Windows 11
Audio chipKnown for oneRealtek ALC1220P
Expansion slots2 differ
PCI Express x16 (Gen 3.x) slotsKnown for one2
PCI Express x16 (Gen 4.x) slots11
Number of M.2 (M) slots33
1st M.2 largest key size22802280
1st M.2 highest PCI Express generationDiffers4.05.0
2nd M.2 largest key size22802280
2nd M.2 highest PCI Express generation4.04.0
3rd M.2 largest key size22802280
3rd M.2 highest PCI Express generationDiffers3.04.0
PCI Express x1 (Gen 4.x) slotsKnown for one1
PCI Express x16 (Gen 5.x) slotsKnown for one1
BIOSidentical
BIOS typeUEFI AMIUEFI AMI
BIOS memory size256 Mbit256 Mbit
Packaging data1 differ
Package width275 mm275 mm
Package depth275 mm275 mm
Package height67.5 mm67.5 mm
Package weightDiffers1.45 kg1.68 kg
Weight & dimensionsidentical
Width244 mm244 mm
Depth244 mm244 mm
Packaging contentidentical
Cables includedSATASATA
Screws includedYesYes
Antenna includedKnown for oneYes
Other features1 differ
WeightDiffers910 g1.2 kg
Quick installation guideKnown for oneYes
mSATA ports quantityKnown for one0

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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