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Product comparison · 2 motherboards

ASUS PRIME B550-PLUS AC-HES vs ASUS PRIME B840M-R

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  • 59specifications compared
  • 21differ
  • 38identical
  • 21known for one product only

Key differences

The ASUS PRIME B550-PLUS AC-HES has 2 more memory slots than the ASUS PRIME B840M-R (4 vs 2). The ASUS PRIME B550-PLUS AC-HES has 2 more HDDs supported than the ASUS PRIME B840M-R (6 vs 4). The ASUS PRIME B550-PLUS AC-HES has 2 more storage drives supported than the ASUS PRIME B840M-R (8 vs 6). Only the ASUS PRIME B550-PLUS AC-HES has Wi-Fi. Processor socket: Socket AM4 on the ASUS PRIME B550-PLUS AC-HES, Socket AM5 on the ASUS PRIME B840M-R.

  • Processor socket
    • Socket AM4
    • Socket AM5
  • Supported memory types
    • DDR4-SDRAM
    • DDR5-SDRAM
  • Number of memory slots
    • 4
    • 2
  • ECC сompatibility
    • ECC
    • Non-ECC
  • Number of HDDs supported
    • 6
    • 4
  • Number of storage drives supported
    • 8
    • 6
  • RAID levels
    • 0, 1, 10
    • 0, 1, 5, 10
  • USB 3.2 Gen 1 (3.1 Gen 1) connectors
    • 2
    • 1

Side by side

Differences highlightedShow differences only
80 specifications
A

ASUS

PRIME B550-PLUS AC-HESView product
B

ASUS

PRIME B840M-RView product
Processor2 differ
Processor manufacturerAMDAMD
Processor socketDiffersSocket AM4Socket AM5
Compatible processor seriesDiffersAMD Ryzen 5000 Series, AMD Ryzen 3000 SeriesAMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series
Memory3 differ
Supported memory typesDiffersDDR4-SDRAMDDR5-SDRAM
Number of memory slotsDiffers42
Memory slots typeDIMMDIMM
Memory channelsDual-channelDual-channel
ECC сompatibilityDiffersECCNon-ECC
Supported memory clock speed (max)Known for one7600 MHz
Maximum internal memory128 GB128 GB
Unbuffered memoryYesYes
Supported memory clock speedsKnown for one4866,4800,4600,4466,4400,4333,4266,4200,4133,4000,3866,3733,3600,3466,3400,3333,3200,3000,2933,2800,2666,2400,2133 MHz
Storage controllers3 differ
Supported storage drive typesHDD & SSDHDD & SSD
Supported storage drive interfacesM.2, SATA IIIM.2, SATA III
Number of HDDs supportedDiffers64
Number of storage drives supportedDiffers86
RAID supportYesYes
RAID levelsDiffers0, 1, 100, 1, 5, 10
Graphicsidentical
Parallel processing technology supportNot supportedNot supported
Internal I/O2 differ
USB 2.0 connectors22
USB 3.2 Gen 1 (3.1 Gen 1) connectorsDiffers21
USB 3.2 Gen 2 (3.1 Gen 2) connectors00
Number of SATA III connectorsDiffers64
S/PDIF out connectorKnown for oneYes
Front panel audio connectorYesYes
ATX Power connector (24-pin)YesYes
CPU fan connectorYesYes
Number of CPU fan connectors11
Number of chassis fan connectors22
EPS power connector (8-pin)YesYes
12V power connectorYesYes
Number of COM connectors11
TPM connectorYesYes
Rear panel I/O ports3 differ
USB 2.0 ports quantity22
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers24
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 quantityDiffers10
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantityDiffers10
Ethernet LAN (RJ-45) ports11
PS/2 ports quantityKnown for one1
VGA (D-Sub) ports quantity00
HDMI ports quantity11
DVI-D ports quantity00
DisplayPorts quantity11
Headphone outputs11
Line-inKnown for oneYes
Microphone inYesYes
USB connector typeKnown for oneUSB Type-A
S/PDIF out portKnown for oneYes
Network2 differ
Ethernet LANYesYes
Ethernet interface typeGigabit EthernetGigabit Ethernet
Wi-FiDiffersYesNo
Top Wi-Fi standardDiffersWi-Fi 5 (802.11ac)Not available
Wi-Fi standardsKnown for oneWi-Fi 5 (802.11ac)
Features3 differ
Component forPCPC
Motherboard form factorDiffersATXmicro ATX
Motherboard chipset familyAMDAMD
Motherboard chipsetDiffersAMD B550AMD B840
Audio output channels7.1 channels7.1 channels
Product colourMulticolourMulticolour
Windows operating systems supportedDiffersWindows 10 x64Windows 11, Windows 10 x64
Audio chipKnown for oneRealtek ALC887 / Realtek ALC897
Expansion slots1 differ
PCI Express x1 (Gen 3.x) slotsKnown for one1
PCI Express x16 (Gen 4.x) slotsKnown for one1
Number of M.2 (M) slots22
1st M.2 largest key sizeDiffers22422280
PCI Express x16 (Gen 3.x) slotsKnown for one4
2nd M.2 largest key sizeKnown for one2260
3rd M.2 largest key sizeKnown for one2280
4th M.2 largest key sizeKnown for one22110
BIOSidentical
BIOS typeUEFI AMIUEFI AMI
BIOS memory size256 Mbit256 Mbit
Packaging dataidentical
Package widthKnown for one260 mm
Package depthKnown for one270 mm
Package heightKnown for one51.5 mm
Package weightKnown for one924 g
Weight & dimensions2 differ
WidthDiffers305 mm236 mm
DepthDiffers244 mm229 mm
HeightKnown for one36.5 mm
Other featuresidentical
WeightKnown for one563 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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