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Product comparison · 2 motherboards

ASUS PRIME B840M-R vs ASUS ROG STRIX X870E-A GAMING WIFI7 NEO

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  • 63specifications compared
  • 28differ
  • 35identical
  • 27known for one product only

Key differences

The ASUS ROG STRIX X870E-A GAMING WIFI7 NEO has 2 more memory slots than the ASUS PRIME B840M-R (4 vs 2). The ASUS ROG STRIX X870E-A GAMING WIFI7 NEO has 2,000 MHz more supported memory clock speed (max) than the ASUS PRIME B840M-R (9600 MHz vs 7600 MHz). The ASUS ROG STRIX X870E-A GAMING WIFI7 NEO has 128 GB more maximum internal memory than the ASUS PRIME B840M-R (256 GB vs 128 GB). Only the ASUS ROG STRIX X870E-A GAMING WIFI7 NEO has Wi-Fi. ECC сompatibility: Non-ECC on the ASUS PRIME B840M-R, ECC & Non-ECC on the ASUS ROG STRIX X870E-A GAMING WIFI7 NEO.

  • Number of memory slots
    • 2
    • 4
  • ECC сompatibility
    • Non-ECC
    • ECC & Non-ECC
  • Supported memory clock speed (max)
    • 7600 MHz
    • 9600 MHz
  • Maximum internal memory
    • 128 GB
    • 256 GB
  • Supported storage drive interfaces
    • M.2, SATA III
    • SATA III, M.2
  • Number of storage drives supported
    • 6
    • 8
  • USB 2.0 connectors
    • 2
    • 3
  • USB 3.2 Gen 1 (3.1 Gen 1) connectors
    • 1
    • 2

Side by side

Differences highlightedShow differences only
90 specifications
A

ASUS

PRIME B840M-RView product
B

ASUS

ROG STRIX X870E-A GAMING WIFI7 NEOView product
Memory4 differ
Number of memory slotsDiffers24
ECC сompatibilityDiffersNon-ECCECC & Non-ECC
Supported memory clock speed (max)Differs7600 MHz9600 MHz
Maximum internal memoryDiffers128 GB256 GB
Storage controllers2 differ
Supported storage drive interfacesDiffersM.2, SATA IIISATA III, M.2
Number of storage drives supportedDiffers68
Internal I/O3 differ
USB 2.0 connectorsDiffers23
USB 3.2 Gen 1 (3.1 Gen 1) connectorsDiffers12
USB 3.2 Gen 2x2 connectorsKnown for one1
Number of chassis fan connectorsDiffers25
Chassis intrusion connectorKnown for oneYes
S/PDIF out connectorKnown for oneYes
Number of COM connectorsKnown for one1
TPM connectorKnown for oneYes
Rear panel I/O ports3 differ
USB 2.0 ports quantityDiffers20
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityDiffers05
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantityDiffers01
USB4 Gen 3x2 ports quantityKnown for one2
S/PDIF out portKnown for oneYes
WiFi-AP antenna jackKnown for one1
PS/2 ports quantityKnown for one1
DisplayPorts quantityKnown for one1
Headphone outputsKnown for one1
Line-inKnown for oneYes
USB connector typeKnown for oneUSB Type-A
Network3 differ
Ethernet interface typeDiffersGigabit Ethernet5 Gigabit Ethernet
Wi-FiDiffersNoYes
Top Wi-Fi standardDiffersNot availableWi-Fi 7 (802.11be)
Wi-Fi standardsKnown for oneWi-Fi 7 (802.11be)
WLAN controller modelKnown for oneMediaTek MT7925
BluetoothKnown for oneYes
Bluetooth versionKnown for one5.4
Features3 differ
Motherboard form factorDiffersmicro ATXATX
Motherboard chipsetDiffersAMD B840AMD X870E
Windows operating systems supportedDiffersWindows 11, Windows 10 x64Windows 11
Expansion slots1 differ
PCI Express x16 (Gen 5.x) slotsKnown for one1
Number of M.2 (M) slotsDiffers24
1st M.2 highest PCI Express generationKnown for one5.0
2nd M.2 largest key sizeKnown for one2260
2nd M.2 highest PCI Express generationKnown for one5.0
3rd M.2 largest key sizeKnown for one2242
3rd M.2 highest PCI Express generationKnown for one5.0
4th M.2 largest key sizeKnown for one22110
4th M.2 highest PCI Express generationKnown for one5.0
PCI Express x1 (Gen 3.x) slotsKnown for one1
BIOS1 differ
BIOS memory sizeDiffers256 Mbit64 Mbit
Clear CMOS buttonKnown for oneYes
Packaging data4 differ
Package widthDiffers260 mm353 mm
Package depthDiffers270 mm273 mm
Package heightDiffers51.5 mm68 mm
Package weightDiffers924 g2.7 kg
Weight & dimensions3 differ
WidthDiffers236 mm305 mm
DepthDiffers229 mm244 mm
HeightDiffers36.5 mm50 mm
Other features1 differ
WeightDiffers563 g1.9 kg

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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