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Product comparison · 2 motherboards

ASUS A320M-K AMD A320 Socket AM4 micro ATX vs ASUS Prime B550M-A/CSM

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  • 43specifications compared
  • 17differ
  • 26identical
  • 39known for one product only

Key differences

  • Number of memory slots
    • 2
    • 4
  • Maximum internal memory
    • 32 GB
    • 128 GB
  • Supported storage drive interfaces
    • PCI Express 3.0, SATA III
    • M.2, SATA
  • On-board graphics card
    • Yes
    • No
  • USB 2.0 connectors
    • 2
    • 4
  • USB 3.2 Gen 1 (3.1 Gen 1) connectors
    • 1
    • 2
  • USB 2.0 ports quantity
    • 2
    • 0
  • USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
    • 0
    • 2

Side by side

Differences highlightedShow differences only
82 specifications
A

ASUS

A320M-K AMD A320 Socket AM4 micro ATX

Model A320M-K

View product
B

ASUS

Prime B550M-A/CSMView product
Processor1 differ
Processor manufacturerAMDAMD
Processor socketSocket AM4Socket AM4
Compatible processor seriesDiffersAMD A, AMD Athlon, AMD Athlon™ X4, AMD Ryzen 2000 Series, AMD Ryzen 3000 SeriesAMD Ryzen 3000 Series
Maximum number of SMP processorsKnown for one1
Supported processor socketsKnown for oneSocket AM4
Memory3 differ
Supported memory typesDDR4-SDRAMDDR4-SDRAM
Number of memory slotsDiffers24
Memory slots typeDIMMDIMM
Memory channelsKnown for oneDual-channel
ECC сompatibilityKnown for oneECC & Non-ECC
Supported memory clock speedsDiffers2133,2400,2666,2800,2933,3000,3200 MHz2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600 MHz
Maximum internal memoryDiffers32 GB128 GB
Unbuffered memoryKnown for oneYes
Storage controllers1 differ
Supported storage drive typesKnown for oneHDD & SSD
Supported storage drive interfacesDiffersPCI Express 3.0, SATA IIIM.2, SATA
Number of HDDs supportedKnown for one4
Number of storage drives supportedKnown for one5
RAID levelsKnown for one0, 1, 10
Graphics1 differ
Maximum graphics card memoryKnown for one2048 MB
On-board graphics cardDiffersYesNo
Graphics card familyKnown for oneAMD
Graphics cardKnown for oneRadeon Vega
Maximum resolutionKnown for one4096 x 2160 pixels
Internal I/O2 differ
USB 2.0 connectorsDiffers24
USB 3.2 Gen 1 (3.1 Gen 1) connectorsDiffers12
USB 3.2 Gen 2 (3.1 Gen 2) connectors00
Number of SATA III connectors44
Number of SATA II connectors00
Total number of SATA connectorsKnown for one4
Number of Parallel ATA connectors00
S/PDIF out connectorKnown for oneYes
Audio connectorKnown for oneYes
Front panel audio connectorKnown for oneYes
Front panel connectorKnown for oneYes
ATX Power connector (24-pin)Known for oneYes
Number of EATX power connectorsKnown for one1
CPU fan connectorKnown for oneYes
Number of chassis fan connectorsKnown for one1
Peripheral (Molex) power connectors (4-pin)Known for one1
12V power connectorKnown for oneYes
Number of COM connectorsKnown for one1
Number of SATA connectorsKnown for one0
Rear panel I/O ports4 differ
USB 2.0 ports quantityDiffers20
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity44
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity00
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 quantity00
Ethernet LAN (RJ-45) ports11
eSATA ports quantity00
PS/2 ports quantityDiffers21
Firewire (IEEE 1394) ports00
VGA (D-Sub) ports quantity11
HDMI ports quantity11
HDMI versionKnown for one1.4b
DVI-D ports quantityDiffers01
Headphone outputsKnown for one1
Microphone inKnown for oneYes
Networkidentical
Ethernet LANYesYes
Ethernet interface typeGigabit EthernetGigabit Ethernet
LAN controllerRealtek RTL8111HRealtek RTL8111H
Wi-FiNoNo
Features2 differ
Component forPCPC
Motherboard form factormicro ATXmicro ATX
Motherboard chipset familyAMDAMD
Motherboard chipsetDiffersAMD A320AMD B550
Audio chipRealtek ALC887Realtek ALC887
Audio output channels7.1 channels7.1 channels
Power source typeKnown for oneATX
Windows operating systems supportedDiffersWindows 10, Windows 7Windows 10
Product colourKnown for oneBlack, Silver
Expansion slotsidentical
PCI Express x1 (Gen 2.x) slotsKnown for one2
PCI Express x16 slotsKnown for one3
PCI Express x16 (Gen 4.x) slotsKnown for one1
BIOS1 differ
BIOS typeUEFI AMIUEFI AMI
BIOS memory sizeDiffers128 Mbit256 Mbit
Clear CMOS jumperKnown for oneYes
System Management BIOS (SMBIOS) versionKnown for one3.0
Weight & dimensions2 differ
WidthDiffers226 mm244 mm
DepthDiffers221 mm244 mm
Packaging contentidentical
Cables includedKnown for oneSATA
Drivers includedKnown for oneYes
Other featuresidentical
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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