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Product comparison · 2 motherboards

ASUS H81M-D R2.0 vs ASUS P9A-I/C2550/SAS/4L Mini-ITX

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  • 16specifications compared
  • 11differ
  • 5identical
  • 55known for one product only

Key differences

  • ECC сompatibility
    • Non-ECC
    • ECC
  • Supported memory clock speeds
    • 1066,1333,1600 MHz
    • 1333,1600 MHz
  • Supported storage drive interfaces
    • SATA II, SATA III
    • SATA III
  • USB 2.0 connectors
    • 2
    • 0
  • USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
    • 2
    • 0
  • Ethernet LAN (RJ-45) ports
    • 1
    • 5
  • PS/2 ports quantity
    • 2
    • 0
  • Ethernet interface type
    • Gigabit Ethernet
    • Fast Ethernet

Side by side

Differences highlightedShow differences only
71 specifications
A

ASUS

H81M-D R2.0View product
B

ASUS

P9A-I/C2550/SAS/4L Mini-ITX

Model P9A-I/C2550/SAS/4L

View product
Processoridentical
Processor manufacturerIntelIntel
Processor socketKnown for oneLGA 1150 (Socket H3)
Compatible processor seriesKnown for oneIntel® Celeron®, Intel® Pentium®
Maximum number of SMP processorsKnown for one1
Intel Core i3/i5/i7/i9 seriesKnown for onei3-4xxx, i5-4xxx, i7-4xxx
Memory2 differ
Supported memory typesDDR3-SDRAMDDR3-SDRAM
Number of memory slotsKnown for one2
Memory slots typeKnown for oneDIMM
Memory channelsKnown for oneDual-channel
ECC сompatibilityDiffersNon-ECCECC
Internal memoryKnown for one16 GB
Supported memory clock speedsDiffers1066,1333,1600 MHz1333,1600 MHz
Unbuffered memoryKnown for oneYes
Maximum internal memoryKnown for one32 GB
Storage controllers1 differ
Supported storage drive interfacesDiffersSATA II, SATA IIISATA III
Internal I/O1 differ
USB 2.0 connectorsDiffers20
USB 3.2 Gen 1 (3.1 Gen 1) connectorsKnown for one0
Number of SATA III connectorsKnown for one2
Number of SATA II connectorsKnown for one2
Number of SATA connectorsKnown for one4
S/PDIF out connectorKnown for oneYes
Number of EATX power connectorsKnown for one1
CPU fan connectorKnown for oneYes
ATX Power connector (24-pin)Known for oneYes
Chassis intrusion connectorKnown for oneYes
Serial port headersKnown for one1
Rear panel I/O ports3 differ
USB 2.0 ports quantity22
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers20
Ethernet LAN (RJ-45) portsDiffers15
eSATA ports quantityKnown for one0
PS/2 ports quantityDiffers20
Firewire (IEEE 1394) portsKnown for one0
VGA (D-Sub) ports quantity11
HDMI ports quantityKnown for one0
DVI-D ports quantityKnown for one0
Headphone outputsKnown for one1
Microphone inKnown for oneYes
COM ports quantityKnown for one1
Parallel ports quantityKnown for one1
Network1 differ
Ethernet LANYesYes
Ethernet interface typeDiffersGigabit EthernetFast Ethernet
Features1 differ
Component forKnown for onePC
Motherboard form factorDiffersmicro ATXMini-ITX
Motherboard chipset familyKnown for oneIntel
Motherboard chipsetKnown for oneIntel® H81
Audio output channelsKnown for one7.1 channels
Cooling typeKnown for oneActive
Power source typeKnown for oneATX
Windows operating systems supportedKnown for oneWindows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Win
Expansion slotsidentical
PCI Express x1 (Gen 2.x) slotsKnown for one1
PCI Express x16 slotsKnown for one1
PCI Express x8 (Gen 2.x) slotsKnown for one1
PCI Express x8 (Gen 3.x) slotsKnown for one0
PCI Express x16 (Gen 2.x) slotsKnown for one0
PCI Express x16 (Gen 3.x) slotsKnown for one0
BIOSidentical
BIOS typeKnown for oneUEFI AMI
BIOS memory sizeKnown for one64 Mbit
ACPI versionKnown for one2.0a
Clear CMOS jumperKnown for oneYes
Processor special featuresidentical
Intel® Clear Video HD Technology (Intel® CVT HD)Known for oneYes
Processor with Intel Graphics Technology requiredKnown for oneYes
Weight & dimensions2 differ
WidthDiffers226 mm170.2 mm
DepthDiffers183 mm170.2 mm
Packaging contentidentical
Cables includedKnown for oneSATA
Graphicsidentical
On-board graphics card memoryKnown for one32 MB
On-board graphics card modelKnown for oneAspeed AST2300
Operational conditionsidentical
Storage temperature (T-T)Known for one-40 - 70 °C
Operating temperature (T-T)Known for one10 - 35 °C
Storage relative humidity (H-H)Known for one20 - 90%
Other featuresidentical
Supported UDIMM module capacityKnown for one2GB, 4GB, 8GB, 16GB
Number of DIMM slotsKnown for one2

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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