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Green Micro ATX motherboard with black LGA 1155 socket, four DDR3 slots, blue PCIe x16, white PCIe x1, white PCI, four SATA ports

MSI

MSI B75MA-E33 B75 LGA 1155 DDR3 16GB Micro ATX Intel motherboard

SKU CH-KF14-55V4T

Micro ATX board for LGA 1155 CPUs with dual-channel DDR3 up to 16 GB, PCIe 3.0 x16, SATA III and Realtek Gigabit LAN

  • Processor3rd Gen Intel Core i7/Core i5/Core i3/Pentium/Celeron proces
  • ChipsetIntel B75
  • CPU socketLGA 1155
  • Supported memorySupports dual-channel DDR3 2400 (overclocking)/2200 (overclo
  • Max supported RAM16 GB
  • PCI slots1 PCIe 3.0 x16 slot 1 x PCIe 2.0 x1 slot 1 x PCI slot
  • Supports 3rd Gen Intel Core processors with LGA 1155 socket
  • Dual-channel DDR3 memory up to 16 GB maximum capacity
  • PCIe 3.0 x16 slot for modern graphics cards
  • Realtek ALC887 provides 8-channel high-definition audio
  • Gigabit LAN via Realtek 8111E for wired networking

Socket 1155 Micro ATX Board

The MSI B75MA-E33 is an Intel B75 motherboard for LGA 1155 processors. It fits third-generation Core i7, i5, i3, Pentium and Celeron CPUs. The Micro ATX form factor measures 23.6 by 20.0 cm and supports up to 16 GB of dual-channel DDR3 memory.

Expansion And Connectivity

One PCIe 3.0 x16 slot, one PCIe 2.0 x1 slot and one PCI slot provide add-in card options. Storage uses three SATA II ports and one SATA III port. Networking is handled by a Realtek 8111E Gigabit LAN controller. Rear I/O supplies four USB 2.0 ports and 8-channel audio via the Realtek ALC887 codec.

Memory Speed Ceiling

The highest validated DDR3 speed is 2400 MHz when overclocked, with standard support down to 1066 MHz. This ceiling decides whether the board can meet a given memory-performance target. Buyers needing faster memory standards must choose a different platform.

How it compares

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

Price $30.99
Cheaper than about 93% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameMSI
Product lineMSI B75MA-E33
Model nameMSI B75MA-E33
Processor
Processor3rd Gen Intel Core i7/Core i5/Core i3/Pentium/Celeron processors with Socket 1155 architecture
CPU socketLGA 1155
ChipsetIntel B75
Memory
Supported memorySupports dual-channel DDR3 2400 (overclocking)/2200 (overclocking)/2000 (overclocking)/1800 (overclocking)/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
- Supports 8-channel sound effects detected by intelligent sound interface
Compatible with Azalia 1.0 specifications
Connectivity
Ethernet controller1 PCI Express network port supports 10/100/1000 Fast Ethernet provided by Realtek 8111E
Ports & slots
PCI slots1 PCIe 3.0 x16 slot
1 x PCIe 2.0 x1 slot
1 x PCI slot
Onboard USB headers4 USB 2.0 ports (backplane)

Questions about this item

Will the CMOS battery or the Realtek ALC887 audio codec need replacing during the board's life?

The package includes a metal CMOS battery for the real-time clock; the Realtek ALC887 audio codec is soldered on and not user-replaceable.

Which limit appears first when the single PCIe 3.0 x16 slot runs at full load for hours?

The lone PCIe 3.0 x16 slot carries all expansion bandwidth, so graphics or compute cards hit that ceiling before memory or SATA.

How hot or loud does the board get when the 16 GB DDR3 limit and Realtek 8111E LAN are active all day?

Passive chipset cooling and no onboard fan keep noise near zero; sustained loads warm the B75 chipset and VRM area but stay within normal operating temperatures.

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