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Green rectangular Micro ATX motherboard with silver heatsinks, black slots and rear I/O panel

MSI

MSI H81M-P33 LGA 1150 Intel H81 Micro ATX Intel motherboard

SKU CH-3B67-EPB40

A Micro ATX board for LGA 1150 CPUs with dual-channel DDR3 up to 16 GB, one PCIe 2.0 x16 slot, two SATA 6Gb/s ports, two USB 3.0 ports, Realtek 8-channel audio and gigabit LAN

  • CPU Socket TypeLGA 1150
  • CPU TypeCore i7 / i5 / i3 / Pentium / Celeron (LGA1150)
  • ChipsetIntel H81
  • Number of Memory Slots2x240pin
  • Memory StandardDDR3 1600/1333/1066
  • Maximum Memory Supported16GB
  • Supports Intel Core i7, i5, i3, Pentium and Celeron LGA 1150 processors
  • Dual-channel DDR3 memory up to 16 GB at 1600, 1333 or 1066 MHz
  • Two SATA 6 Gbps ports for fast storage connectivity
  • Two USB 3.0 and four USB 2.0 ports on the rear I/O panel
  • Realtek ALC887 8-channel audio and Realtek 8111G Gigabit LAN built in

Socket and chipset

The MSI H81M-P33 is a micro ATX motherboard built around the Intel H81 chipset and the LGA 1150 socket. It accepts Core i7, i5, i3, Pentium and Celeron processors from that generation. Two 240-pin slots support up to 16 GB of DDR3 memory at 1600, 1333 or 1066 MHz in dual-channel mode.

Expansion and I/O layout

A single PCI Express 2.0 x16 slot handles a graphics card while one PCI Express x1 slot is available for add-in cards. Two SATA 6 Gb/s ports connect storage drives. The rear panel provides two USB 3.0 ports, four USB 2.0 ports, PS/2 keyboard and mouse connectors, a DVI-D output, and a Gigabit LAN port driven by the Realtek 8111G controller. Onboard audio uses the Realtek ALC887 codec for 8-channel sound.

Military Class 4 and BIOS tools

Military Class 4 components are specified for enhanced stability during extended operation. The M-Flash utility lets you back up or restore the BIOS to a USB flash drive, reducing rewrite cycles on the firmware chip. Live Update 5 automates BIOS and driver updates to keep the platform current without manual intervention.

Highlights

  • Supports Intel Core i7, i5, i3, Pentium and Celeron LGA 1150 processors
  • Dual-channel DDR3 memory up to 16 GB at 1600, 1333 or 1066 MHz
  • Two SATA 6 Gbps ports for fast storage connectivity
  • Two USB 3.0 and four USB 2.0 ports on the rear I/O panel
  • Realtek ALC887 8-channel audio and Realtek 8111G Gigabit LAN built in

Specifications

BrandMSI
ModelH81M-P33
CPU Socket TypeLGA 1150
CPU TypeCore i7 / i5 / i3 / Pentium / Celeron (LGA1150)
ChipsetIntel H81
Number of Memory Slots2x240pin
Memory StandardDDR3 1600/1333/1066
Maximum Memory Supported16GB
Channel SupportedDual Channel
PCI Express 2.0 x161 x PCI Express 2.0 x16
PCI Express x11 x PCI Express x1
Serial ATA (SATA)2 x SATA 6Gb/s
Audio ChipsetRealtek ALC887
Audio Channels8 Channels
LAN ChipsetRealtek 8111G
Max LAN Speed1Gbps
Back I/O Ports2 x PS/2 / 2 x USB 3.0 / 4 x USB 2.0/1.1
PS/21 x PS/2 keyboard port1 x PS/2 mouse port
Video Ports1 x DVI-D1 x Graphics card port
RJ451 x RJ45
USB 3.02 x USB 3.0
USB 1.1/2.04 x USB 2.0
Audio Ports1 x 3 in 1 audio jack
Onboard USB2 x USB 2.0 connectors
Other Connectors1 x ATX 24-Pin power connector1 x 4-pin ATX 12V power connector1 x Serial port connector1 x Trusted Platform Module (TPM) header1 x Chasis intrusion connector1 x Front Panel Audio connector
Form FactorMicro ATX
Dimensions (W x L)8.90" x 6.81"
Power Pin24 Pin
FeaturesSupports 4th Gen Intel Core / Pentium / Celeron processors for LGA 1150 socketSupports DDR3-1600 MemoryUSB 3.0 + SATA 6Gb/sMilitary Class 4: Top Quality & StabilityMilitary Class Essentials: Total Protection for Military Class MotherboardsOC Genie 4: Overclock in 1 SecondClick BIOS 4: Easily Fine-tune Your SystemCommand Center: Control & Customize Your PC SettingsFast Boot: Quickly Boot Up & Enter OS in A Few SecondsM-Flash: Simply Update & Backup Your BIOSLive Update 5: Easily Update The Latest BIOS & Drivers

Questions about this item

How much DDR3 memory can the H81M-P33 accept in total?

The board has two 240-pin slots and supports up to 16 GB of DDR3 running at 1600, 1333 or 1066 MHz in dual-channel mode.

What noise or heat should I expect from the H81M-P33 during all-day operation?

The H81 chipset and Military Class 4 components run passively cooled; only the CPU and case fans produce audible noise under sustained load.

Which parts must I already own to assemble a working system with this motherboard?

You need an LGA 1150 processor, DDR3 DIMMs, a Micro-ATX compatible case and power supply, plus a graphics card for video output.

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