MSI B85M-P33 S1150 Intel B85 DDR3 mATX

Product overview



Standard Due date unavailable

MSI's new Military Class 4 components support you while you are questing, racing, battling and shooting your way to the top. MSI's Military Class 4 components deliver record-breaking stability when you need to keep cool in the heat of battle. The new standard in stability built on a proven technology of high quality components.

The core of Military Class 4 is based on the essentials which increase your stability in the worst conditions. The humidity protection and high temperature protection ensure your system surviving each environment, no matter how harsh. The new structure of the PCB limits EMI radiation. On top of that all the connectors have ESD protection in order to prevent short circuit.

OC Genie 4

OC Genie 4 supercharges your speed experience! When used, OC Genie 4 accelerates your entire system and puts it into overdrive! Tuned by the professional overclockers, OC Genie 4 hands you record-breaking performance on a silver plate.

Click BIOS 4

The MSI Click BIOS 4 is the latest UEFI BIOS with optimizations for Windows 8. Not only reacting faster and running smoother, it also has better mouse support. This is all comes with many cool features, such as Hardware Monitor, Board Explorer, and OC Profile Preview.

  • Optimizations for Latest Windows
  • Hardware Monitor
  • Board Explorer
  • OC Profile Preview

Key Features

  • Intel® B85 Express
  • Supports 4th Gen Intel® Core™ / Pentium® / Celeron® processors for LGA 1150 socket
  • Supports DDR3-1600 Memory
  • USB 3.0 + SATA 6Gb/s
  • Military Class 4: Top Quality & Stability
  • Military Class Essentials: Total Protection for Military Class Motherboards
  • OC Genie 4: Overclock in 1 Second
  • Click BIOS 4: Easily Fine-tune Your System
  • PCI Express Gen 3: World's 1st PCI Express Gen 3 Motherboard Brand
  • Command Center: Control & Customize Your PC Settings
  • Fast Boot: Quickly Boot Up & Enter OS in A Few Seconds
  • Super RAID: Easily Setup & Configure Intel® Technologies
  • M-Flash: Simply Update & Backup Your BIOS
  • Live Update 5: Easily Update The Latest BIOS & Drivers
  • Intel® Small Business Advantage 2.0: Streamiline PC Maintenance & Security



Product Description
MSI B85M-P33 - motherboard - micro ATX - LGA1150 Socket - B85
Product Type
Motherboard - micro ATX
Chipset Type
Intel B85 Express
Processor Socket
1 x LGA1150 Socket
Compatible Processors
Pentium, Celeron, Core i5, Core i3, Core i7, Xeon E3-1200 series
Max RAM Size
32 GB
RAM Supported
2 DIMM slots - DDR3 unbuffered
Storage Ports
2 x SATA-600, 2 x SATA-300
USB / FireWire Ports
2 x USB 3.0 + 4 x USB 2.0 + ( 4 x USB 2.0 via headers )
Max Allocated RAM Size
1760 MB
HD Audio (8-channel)
Gigabit Ethernet
Microsoft Certification
Compatible with Windows 7



Product Type
Motherboard - micro ATX
Chipset Type
Intel B85 Express
Processor Socket
LGA1150 Socket
Max Processors Qty
Compatible Processors
Pentium, Celeron, Core i5, Core i3, Core i7, Xeon E3-1200 series

Supported RAM

Max Size
32 GB
Bus Clock
1600 MHz, 1333 MHz, 1066 MHz
Registered or Buffered
Dual channel memory architecture


Max Allocated RAM Size
1760 MB


HD Audio (8-channel)
Audio Codec
Realtek ALC887
Compliant Standards
High Definition Audio


Network Controller
Realtek RTL8111G
Network Interfaces
Gigabit Ethernet

Expansion / Connectivity

Expansion Slots
1 x CPU , 2 x DIMM 240-pin ( 1.5 V ) , 1 x PCIe 3.0 x16 , 1 x PCIe 2.0 x1
Storage Interfaces
SATA-600 -connectors: 2 x 7pin Serial ATA - 2 devices , SATA-300 -connectors: 2 x 7pin Serial ATA - 2 devices
1 x PS/2 keyboard , 4 x USB 2.0 , 1 x PS/2 mouse , 1 x LAN (Gigabit Ethernet) , 1 x VGA , 1 x DVI-D , 2 x USB 3.0 , 1 x audio line-out - mini-jack , 1 x audio line-in - mini-jack , 1 x microphone - mini-jack
Internal Interfaces
4 x USB 2.0 - header , 1 x audio - header , 1 x serial - header
Power Connectors
4-pin ATX12V connector, 24-pin main power connector


BIOS Features
DMI support, M-Flash, MSI ClickBIOS 4
Hardware Features
MSI Military Class IV, Military Class Essentials, OC Genie 4, Intel Small Business Advantage 2.0 support, MSI Fast Boot


Software Included
MSI Live Update 5, MSI Command Center
Compatible with Windows 7
"Compatible with Windows 7" software and devices carry Microsoft’s assurance that these products have passed tests for compatibility and reliability with 32-bit and 64-bit Windows 7.
Compliant Standards
Plug and Play
22.6 cm
17.3 cm
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