Product comparison · 2 motherboards

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

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

Key differences

Number of memory slots
- A320M-K AMD A320 Socket AM4 micro ATX:2
- Prime B550M-A/CSM:4
Maximum internal memory
- A320M-K AMD A320 Socket AM4 micro ATX:32 GB
- Prime B550M-A/CSM:128 GB
Supported storage drive interfaces
- A320M-K AMD A320 Socket AM4 micro ATX:PCI Express 3.0, SATA III
- Prime B550M-A/CSM:M.2, SATA
On-board graphics card
- A320M-K AMD A320 Socket AM4 micro ATX:Yes
- Prime B550M-A/CSM:No
USB 2.0 connectors
- A320M-K AMD A320 Socket AM4 micro ATX:2
- Prime B550M-A/CSM:4
USB 3.2 Gen 1 (3.1 Gen 1) connectors
- A320M-K AMD A320 Socket AM4 micro ATX:1
- Prime B550M-A/CSM:2
USB 2.0 ports quantity
- A320M-K AMD A320 Socket AM4 micro ATX:2
- Prime B550M-A/CSM:0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
- A320M-K AMD A320 Socket AM4 micro ATX:0
- Prime B550M-A/CSM:2

Side by side

Differences highlightedShow differences only

Comparison of A320M-K, Prime B550M-A/CSM
82 specifications	A ASUS A320M-K AMD A320 Socket AM4 micro ATX Model A320M-K View product	B ASUS Prime B550M-A/CSM View product
Processor1 differ
Compatible processor seriesDiffers	AMD A, AMD Athlon, AMD Athlon™ X4, AMD Ryzen 2000 Series, AMD Ryzen 3000 Series	AMD Ryzen 3000 Series
Maximum number of SMP processorsKnown for one	1	Unknown — not stated by the source
Supported processor socketsKnown for one	Socket AM4	Unknown — not stated by the source
Memory3 differ
Number of memory slotsDiffers	2	4
Memory channelsKnown for one	Dual-channel	Unknown — not stated by the source
ECC сompatibilityKnown for one	ECC & Non-ECC	Unknown — not stated by the source
Supported memory clock speedsDiffers	2133,2400,2666,2800,2933,3000,3200 MHz	2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600 MHz
Maximum internal memoryDiffers	32 GB	128 GB
Unbuffered memoryKnown for one	Yes	Unknown — not stated by the source
Storage controllers1 differ
Supported storage drive typesKnown for one	HDD & SSD	Unknown — not stated by the source
Supported storage drive interfacesDiffers	PCI Express 3.0, SATA III	M.2, SATA
Number of HDDs supportedKnown for one	4	Unknown — not stated by the source
Number of storage drives supportedKnown for one	5	Unknown — not stated by the source
RAID levelsKnown for one	0, 1, 10	Unknown — not stated by the source
Graphics1 differ
Maximum graphics card memoryKnown for one	2048 MB	Unknown — not stated by the source
On-board graphics cardDiffers	Yes	No
Graphics card familyKnown for one	AMD	Unknown — not stated by the source
Graphics cardKnown for one	Radeon Vega	Unknown — not stated by the source
Maximum resolutionKnown for one	4096 x 2160 pixels	Unknown — not stated by the source
Internal I/O2 differ
USB 2.0 connectorsDiffers	2	4
USB 3.2 Gen 1 (3.1 Gen 1) connectorsDiffers	1	2
Total number of SATA connectorsKnown for one	4	Unknown — not stated by the source
S/PDIF out connectorKnown for one	Yes	Unknown — not stated by the source
Audio connectorKnown for one	Yes	Unknown — not stated by the source
Front panel audio connectorKnown for one	Yes	Unknown — not stated by the source
Front panel connectorKnown for one	Yes	Unknown — not stated by the source
ATX Power connector (24-pin)Known for one	Yes	Unknown — not stated by the source
Number of EATX power connectorsKnown for one	1	Unknown — not stated by the source
CPU fan connectorKnown for one	Yes	Unknown — not stated by the source
Number of chassis fan connectorsKnown for one	1	Unknown — not stated by the source
Peripheral (Molex) power connectors (4-pin)Known for one	1	Unknown — not stated by the source
12V power connectorKnown for one	Yes	Unknown — not stated by the source
Number of COM connectorsKnown for one	1	Unknown — not stated by the source
Number of SATA connectorsKnown for one	Unknown — not stated by the source	0
Rear panel I/O ports4 differ
USB 2.0 ports quantityDiffers	2	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityDiffers	0	2
PS/2 ports quantityDiffers	2	1
HDMI versionKnown for one	1.4b	Unknown — not stated by the source
DVI-D ports quantityDiffers	0	1
Headphone outputsKnown for one	Unknown — not stated by the source	1
Microphone inKnown for one	Unknown — not stated by the source	Yes
Features2 differ
Motherboard chipsetDiffers	AMD A320	AMD B550
Power source typeKnown for one	ATX	Unknown — not stated by the source
Windows operating systems supportedDiffers	Windows 10, Windows 7	Windows 10
Product colourKnown for one	Unknown — not stated by the source	Black, Silver
Expansion slotsidentical
PCI Express x1 (Gen 2.x) slotsKnown for one	2	Unknown — not stated by the source
PCI Express x16 slotsKnown for one	3	Unknown — not stated by the source
PCI Express x16 (Gen 4.x) slotsKnown for one	Unknown — not stated by the source	1
BIOS1 differ
BIOS memory sizeDiffers	128 Mbit	256 Mbit
Clear CMOS jumperKnown for one	Yes	Unknown — not stated by the source
System Management BIOS (SMBIOS) versionKnown for one	3.0	Unknown — not stated by the source
Weight & dimensions2 differ
WidthDiffers	226 mm	244 mm
DepthDiffers	221 mm	244 mm
Packaging contentidentical
Cables includedKnown for one	SATA	Unknown — not stated by the source
Drivers includedKnown for one	Yes	Unknown — not stated by the source
Other featuresidentical
mSATA ports quantityKnown for one	Unknown — not stated by the source	0

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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