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Green rectangular micro-ATX motherboard with silver CPU socket, black memory slots, blue PCIe slots

MSI

MSI B75MA-P33 Intel B75 LGA 1155 DDR3 Micro ATX Motherboard

SKU CH-HTQS-3VGGB

Micro ATX board with LGA 1155 socket, Intel B75 chipset, dual-channel DDR3 up to 16 GB, PCIe 3.0 x16, SATA III, USB 3.0, Realtek ALC887 audio and gigabit LAN

  • Processor3rd Gen Intel Core i7/Core i5/Core i3/Pentium/Celeron proces
  • ChipsetIntel B75
  • CPU socketLGA 1155
  • Supported memorySupports dual-channel DDR3 1600/1333/1066 MHz memory
  • Max supported RAM16 GB
  • PCI slots1 x PCIe 3.0 x16 slot 1 x PCIe 2.0 x1 slot 1 x PCI slot
  • Supports 3rd Gen Intel Core i7/i5/i3, Pentium and Celeron CPUs via LGA 1155 socket
  • Dual-channel DDR3 memory up to 16 GB at 1600/1333/1066 MHz
  • PCIe 3.0 x16 slot plus PCIe 2.0 x1 and legacy PCI expansion
  • Realtek ALC887 8-channel audio with Azalia 1.0 compliance
  • Two USB 3.0 rear ports and two internal USB 3.0 headers from B75 chipset

Socket 1155 micro-ATX platform

The MSI B75MA-P33 is a micro-ATX motherboard built around the Intel B75 chipset for LGA 1155 processors. It accepts 3rd Gen Intel Core i7, i5, i3, Pentium and Celeron CPUs. Dual-channel DDR3 memory runs at 1600, 1333 or 1066 MHz up to 16 GB total capacity.

Expansion upgrade path

The board provides one PCIe 3.0 x16 slot, one PCIe 2.0 x1 slot and one legacy PCI slot for add-in cards. Storage connects through three SATA II ports and one SATA III port. Integrated Realtek ALC887 audio delivers 8-channel output compliant with Azalia 1.0. Gigabit LAN uses a Realtek 8111E controller.

USB 3.0 and bandwidth limits

The B75 chipset supplies two USB 3.0 ports on the rear I/O and two internal USB 3.0 headers for front-panel connections. PCIe 3.0 x16 bandwidth is available only with a compatible 3rd Gen processor; otherwise the slot operates at PCIe 2.0 speeds. SATA III runs at 6 Gbps while the three SATA II ports are limited to 3 Gbps.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $41.99
Cheaper than about 90% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameMSI
Product lineMSI B75MA-P33
Model nameMSI B75MA-P33
Processor
Processor3rd Gen Intel Core i7/Core i5/Core i3/Pentium/Celeron processors supporting Socket 1155 architecture
CPU socketLGA 1155
ChipsetIntel B75
Memory
Supported memorySupports dual-channel DDR3 1600/1333/1066 MHz memory
Max supported RAM16 GB
Storage
SATA and RAID support3XSATA II interface; 1xSATA III interface
Audio & video
Audio chipRealtek ALC887 Audio Chip
- Support 8-channel sound output
- Compliant with Azalia 1.0 specifications
Connectivity
Ethernet controllerLAN 10/100/1000 Fast Ethernet supported by Reaktek 8111 E
Ports & slots
PCI slots1 x PCIe 3.0 x16 slot
1 x PCIe 2.0 x1 slot
1 x PCI slot
Onboard USB headersIntel B75 chip supports two USB 3.0 I/O ports
Intel B75 chip supports two USB 3.0 internal ports

Questions about this item

What size case and power connector does this micro ATX board need?

It fits micro ATX and larger cases and requires a standard 24-pin ATX power connector plus a 4-pin CPU power connector.

How do I install the CPU in the LGA 1155 socket without bending pins?

Lift the socket lever, align the processor notches with the socket keys, place it gently without pressure, lower the lever and secure the retention bracket.

When should I replace the CMOS battery supplied with the board?

Replace the battery when the system loses BIOS settings or the clock resets after power-off.

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