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Product comparison · 2 motherboards

ASUS B850M MAX GAMING WIFI vs ASUS PRIME B840M-A

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  • 65specifications compared
  • 13differ
  • 52identical
  • 24known for one product only

Key differences

  • USB 3.2 Gen 1 (3.1 Gen 1) connectors
    • 3
    • 2
  • Number of chassis fan connectors
    • 4
    • 2
  • USB 2.0 ports quantity
    • 5
    • 4
  • USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
    • 2
    • 0
  • USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity
    • 0
    • 1
  • USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
    • 1
    • 2
  • USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
    • 1
    • 0
  • DisplayPorts quantity
    • 1
    • 2

Side by side

Differences highlightedShow differences only
89 specifications
A

ASUS

B850M MAX GAMING WIFIView product
B

ASUS

PRIME B840M-AView 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
Maximum internal memory256 GB256 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
On-board graphics cardKnown for oneNo
Internal I/O2 differ
USB 2.0 connectors22
USB 3.2 Gen 1 (3.1 Gen 1) connectorsDiffers32
USB 3.2 Gen 2 (3.1 Gen 2) connectors00
Number of SATA III connectors44
Number of SATA II connectorsKnown for one0
Number of SATA connectorsKnown for one0
S/PDIF out connectorYesYes
Front panel audio connectorYesYes
Front panel connectorYesYes
ATX Power connector (24-pin)YesYes
CPU fan connectorYesYes
Number of chassis fan connectorsDiffers42
Chassis intrusion connectorKnown for oneYes
EPS power connector (8-pin)YesYes
12V power connectorYesYes
Number of COM connectors11
TPM connectorYesYes
RGB LED pin headerKnown for oneYes
Number of RGB LED pin headersKnown for one3
Rear panel I/O ports6 differ
USB 2.0 ports quantityDiffers54
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers20
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantityDiffers01
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityDiffers12
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantityDiffers10
Ethernet LAN (RJ-45) ports11
VGA (D-Sub) ports quantity00
HDMI ports quantity11
DVI-D ports quantity00
DisplayPorts quantityDiffers12
Line-inKnown for oneYes
Microphone inKnown for oneYes
WiFi-AP antenna jackKnown for one1
Network2 differ
Ethernet LANYesYes
Ethernet interface typeDiffersGigabit Ethernet2.5 Gigabit Ethernet
Wi-FiDiffersYesNo
Top Wi-Fi standardKnown for oneWi-Fi 6 (802.11ax)
Wi-Fi standardsKnown for oneWi-Fi 6 (802.11ax)
BluetoothKnown for oneYes
Bluetooth versionKnown for one5.4
Features1 differ
Component forPCPC
Motherboard form factormicro ATXmicro ATX
Motherboard chipset familyAMDAMD
Motherboard chipsetDiffersAMD B850AMD B840
Audio output channels7.1 channels7.1 channels
Product colourKnown for oneBlack
Cooling typeKnown for onePassive
Windows operating systems supportedWindows 10 x64, Windows 11Windows 10 x64, Windows 11
Expansion slots2 differ
PCI Express x16 (Gen 4.x) slotsDiffers31
PCI Express x16 (Gen 5.x) slotsKnown for one1
Number of M.2 (M) slots33
1st M.2 largest key size22802280
1st M.2 highest PCI Express generationDiffers5.04.0
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 generation3.03.0
PCI Express x16 (Gen 3.x) slotsKnown for one2
BIOSidentical
BIOS typeUEFI AMIUEFI AMI
BIOS memory size256 Mbit256 Mbit
Packaging dataidentical
Package widthKnown for one275 mm
Package depthKnown for one275 mm
Package heightKnown for one67.5 mm
Package weightKnown for one1.38 kg
Weight & dimensionsidentical
Width244 mm244 mm
Depth244 mm244 mm
Packaging contentidentical
Antenna includedKnown for oneYes
Cables includedSATASATA
Screws includedYesYes
Other featuresidentical
mSATA ports quantityKnown for one0
WeightKnown for one859 g

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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