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Product comparison · 2 motherboards

ASUS PRIME B840M-K vs ASUS ROG STRIX B850-F GAMING WIFI7 NEO

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  • 57specifications compared
  • 23differ
  • 34identical
  • 28known for one product only

Key differences

  • Number of memory slots
    • 2
    • 4
  • Maximum internal memory
    • 128 GB
    • 256 GB
  • Number of HDDs supported
    • 4
    • 2
  • 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 SATA III connectors
    • 4
    • 2
  • Number of chassis fan connectors
    • 3
    • 4
  • USB 2.0 ports quantity
    • 2
    • 4

Side by side

Differences highlightedShow differences only
85 specifications
A

ASUS

PRIME B840M-KView product
B

ASUS

ROG STRIX B850-F GAMING WIFI7 NEOView product
Processoridentical
Supported processor socketsKnown for oneSocket AM5
Memory2 differ
Number of memory slotsDiffers24
Supported memory clock speed (max)Known for one8000 MHz
Maximum internal memoryDiffers128 GB256 GB
Storage controllers1 differ
Number of HDDs supportedDiffers42
Graphicsidentical
On-board graphics cardKnown for oneNo
Internal I/O4 differ
USB 3.2 Gen 1 (3.1 Gen 1) connectorsDiffers21
USB 3.2 Gen 2 (3.1 Gen 2) connectorsDiffers01
Number of SATA III connectorsDiffers42
Number of SATA II connectorsKnown for one0
Number of SATA connectorsKnown for one0
Number of CPU fan connectorsKnown for one1
Number of chassis fan connectorsDiffers34
Thunderbolt headersKnown for one1
S/PDIF out connectorKnown for oneYes
Front panel connectorKnown for oneYes
Number of COM connectorsKnown for one1
TPM connectorKnown for oneYes
RGB LED pin headerKnown for oneYes
Number of RGB LED pin headersKnown for one3
Rear panel I/O ports3 differ
USB 2.0 ports quantityDiffers24
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityDiffers02
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantityDiffers01
USB 3.2 Gen 2x2 Type-C ports quantityKnown for one1
DisplayPorts quantityKnown for one1
S/PDIF out portKnown for oneYes
Network2 differ
Wi-FiDiffersNoYes
Top Wi-Fi standardDiffersNot availableWi-Fi 7 (802.11be)
Wi-Fi standardsKnown for oneWi-Fi 7 (802.11be)
BluetoothKnown for oneYes
Bluetooth versionKnown for one5.4
Features4 differ
Motherboard form factorDiffersmicro ATXATX
Motherboard chipsetDiffersAMD B840AMD B850
Audio chipKnown for oneRealtek ALC4080
Product colourDiffersBlackMulticolour
Windows operating systems supportedDiffersWindows 10 x64, Windows 11Windows 11
Expansion slots1 differ
PCI Express x16 (Gen 5.x) slotsKnown for one1
Number of M.2 (M) slotsDiffers24
1st M.2 largest key sizeKnown for one2280
PCI Express x16 (Gen 3.x) slotsKnown for one1
BIOSidentical
Clear CMOS buttonKnown for oneYes
Packaging data4 differ
Package widthDiffers270 mm353 mm
Package depthDiffers263 mm273 mm
Package heightDiffers51.5 mm68 mm
Package weightDiffers1.02 kg2.18 kg
Weight & dimensions2 differ
WidthDiffers244 mm305 mm
DepthDiffers221 mm244 mm
Other featuresidentical
mSATA ports quantityKnown for one0
WeightKnown for one1.63 kg
Packaging contentidentical
Cables includedKnown for oneSATA
Screws includedKnown for oneYes

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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