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MSI B85M Eco Review | 107 Data compared

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  • Avg. price in UK: ~£60
  • Avg. price in US: ~$70
  • CPU socket: LGA 1150
  • Chipset: Intel B85
  • Form factor: microATX

MSI B85M Eco review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

4.0

Overall score

What it is: An overall evaluation of the motherboard's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best motherboards on the market.

Score components:

90.0%

3.8

Technical Score

10.0%

6.2

User score

Poor
3.8

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

3.8

Memory

16.0%

4.9

Platform & Features

16.0%

3.0

Storage

15.0%

5.2

Network

13.0%

1.6

Ports & USB

8.0%

2.4

Expansion

8.0%

3.8

Power & Cooling

5.0%

6.5

Audio

Poor
6.2

User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

7.2

User reviews

30.0%

3.7

Popularity

User score:
United Kingdom
amazon
3.8
(45)
United States
Amazon_logo.png
3.6
(46)

(Reviews last updated: May 2026)

Good
  • 2.5
    Gaming

    Score components:

    28.0%

    4.2

    VRM phases

    22.0%

    1.0

    N. of M.2 sockets

    18.0%

    4.6

    LAN speed

    17.0%

    1.0

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

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Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The MSI B85M ECO is a Micro-ATX motherboard designed for energy efficiency, featuring the Intel B85 Express chipset and an LGA 1150 socket that supports 4th Gen Intel Core, Pentium, and Celeron processors. Its primary characteristics include 4 DDR3 DIMM slots supporting up to 32GB of 1600MHz RAM, a PCIe 3.0 x16 slot, and Intel Gigabit LAN for stable networking. The main pros are its 'ECO Tech Design' which can reduce power consumption by up to 40% without losing performance, Military Class 4 components for high durability, and TUV certification for long-term stability. However, it lacks modern features like M.2 storage slots or built-in Wi-Fi, and it does not support RAID configurations or high-speed DDR4 memory.

Technical Specifications of MSI B85M Eco

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

3.8

Memory

16.0%

4.9

Platform & Features

16.0%

3.0

Storage

15.0%

5.2

Network

13.0%

1.6

Ports & USB

8.0%

2.4

Expansion

8.0%

3.8

Power & Cooling

5.0%

6.5

Audio

3.8
MSI B85M Eco has a technical score of 3.8 points, which is lower than that of 97.8% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

7.2

User reviews

30.0%

3.7

Popularity

User score:
United Kingdom
amazon
3.8
(45)
United States
Amazon_logo.png
3.6
(46)

(Reviews last updated: May 2026)

6.2
MSI B85M Eco has a user score of 6.16 points, which is lower than that of 92.1% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by the motherboard.
When it matters: When you prefer a motherboard that has already been bought and reviewed by many other users.
3.7
MSI B85M Eco has a popularity of 3.7 points, which is lower than 53.9% of products in this category.
Ratio quality/price

What it is: An indicator that combines the motherboard's overall rating with its cost.

When it matters: When you are looking for a motherboard that offers a strong balance of features, performance, and price.

Score components:

60.0%

4.0

Overall score

40.0%

10

Price

5.8
MSI B85M Eco has a quality-to-price ratio of 5.8 points, which is lower than 97.1% of products in this category.
Brand name
What it is: The brand that makes the motherboard.
When it matters: When you have a brand preference for support, BIOS, or build quality.

Importance: MEDIUM

MSI
CPU socket
What it is: The socket type the motherboard is built to support.
When it matters: When you need the motherboard to match a specific CPU.

Importance: HIGH

LGA 1150
MSI B85M Eco uses the LGA 1150 CPU socket, which is less advanced than that of 90.2% of motherboards and equal to that of 6.6% of motherboards.
CPU platform

Importance: MEDIUM

Intel
Chipset
What it is: The chipset that defines the motherboard platform and many of its features.
When it matters: When you compare platform features, connectivity, and CPU support.

Importance: HIGH

Intel B85
MSI B85M Eco uses the Intel B85 chipset, which is less advanced than that of 89.8% of motherboards and equal to that of 0.4% of motherboards.
Form factor
What it is: The physical size standard of the motherboard, such as ATX or Micro-ATX.
When it matters: When you need the board to fit a specific case size.

Importance: HIGH

microATX
MSI B85M Eco has the microATX form factor, which is less versatile than that of 52.2% of motherboards and equal to that of 32.4% of motherboards.
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DDR memory version
What it is: The RAM generation the motherboard supports, such as DDR4 or DDR5.
When it matters: When you need the board to match a certain memory platform.

Importance: HIGH

Good value: DDR5

DDR3
MSI B85M Eco uses DDR3 memory, which is older than that of 86.6% of motherboards and equal to that of 13.4% of motherboards.
Memory slots
What it is: The number of RAM slots on the motherboard.
When it matters: When you want more room for future memory upgrades.

Importance: HIGH

Good value: >=4

4
MSI B85M Eco has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% of motherboards.
Maximum memory capacity
What it is: The largest total amount of RAM the motherboard supports.
When it matters: When you plan a build with very high memory capacity.

Importance: HIGH

Good value: >=128 GB

32 GB
MSI B85M Eco supports up to 32 GB of memory, which is less than 87% of motherboards and equal to 11.2% of motherboards.
Memory channels
What it is: The memory channel configuration supported by the motherboard platform.
When it matters: When memory bandwidth matters for your build.

Importance: MEDIUM

2
MSI B85M Eco supports 2 memory channels, which is more than 0.2% of motherboards and equal to 92.5% of motherboards.
Maximum RAM speed
What it is: The highest officially supported memory speed for the motherboard.
When it matters: When you choose RAM and want to know the supported speed ceiling.

Importance: HIGH

Good value: >=6400 MT/s

1,600 MT/s
MSI B85M Eco supports memory speeds up to 1600 MT/s, which is lower than that of 93.1% of motherboards and equal to that of 6.4% of motherboards.
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N. of M.2 sockets
What it is: The number of M.2 slots available on the motherboard.
When it matters: When you want room for more NVMe or M.2 drives.

Importance: HIGH

Good value: >=3

0
MSI B85M Eco has 0 M.2 sockets, which is fewer than 88.4% of motherboards and equal to 11.7% of motherboards.
M.2 slot interface per slot
What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
When it matters: When you want to check which drives each M.2 slot can use.

Importance: HIGH

N/A
N. of SATA 3 connectors
What it is: The number of SATA 6Gb/s connectors on the motherboard.
When it matters: When you plan to connect multiple SATA drives.

Importance: MEDIUM

Good value: >=6

4
MSI B85M Eco has 4 SATA 3 connectors, which is more than 5.6% of motherboards and equal to 46.3% of motherboards.
Supported RAID levels
What it is: The RAID modes officially supported by the motherboard storage platform.
When it matters: When you plan to use multiple drives in a RAID setup.

Importance: MEDIUM

no
MSI B85M Eco supports RAID levels no, which is narrower than 92.3% of motherboards and equal to 7.1% of motherboards.
NVMe RAID support
What it is: Shows whether the board supports RAID configurations that use NVMe SSDs.
When it matters: When you plan to use multiple NVMe drives in RAID.

Importance: LOW

no
MSI B85M Eco does not support NVMe RAID. 59.8% of motherboards support this feature.
Show more
N. of PCIe 5.0 x16 slots
What it is: The number of PCIe 5.0 x16 physical slots on the motherboard.
When it matters: When you want the newest high-bandwidth expansion slots.

Importance: HIGH

Good value: >=1

0
MSI B85M Eco has 0 PCIe 5.0x16 slots, which is equal to 68.5% of motherboards.
N. of PCIe 4.0 x16 slots
What it is: The number of PCIe 4.0 x16 physical slots on the motherboard.
When it matters: When you want more room for modern expansion cards.

Importance: HIGH

Good value: >=1

0
MSI B85M Eco has 0 PCIe 4.0x16 slots, which is equal to 55.6% of motherboards.
N. of PCIe 3.0 x16 slots
What it is: The number of PCIe 3.0 x16 physical slots on the motherboard.
When it matters: When you need more full-length expansion slots.

Importance: MEDIUM

1
MSI B85M Eco has 1 PCIe 3.0x16 slots, which is more than 40.6% of motherboards and equal to 26.7% of motherboards.
PCIe slot electrical configuration
What it is: The actual lane wiring used by the motherboard PCIe slots.
When it matters: When you need to know how much bandwidth each slot really gets.

Importance: HIGH

x16/x1/x1
MSI B85M Eco uses x16/x1/x1 for PCIe slot electrical configuration, which is less flexible than that of 61.7% of motherboards and equal to that of 8% of motherboards.
PCIe bifurcation support
What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

Importance: MEDIUM

no
MSI B85M Eco does not support PCIe bifurcation. 61% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
What it is: The total number of rear USB ports available on the motherboard.
When it matters: When you use many USB devices directly from the back of the PC.

Importance: MEDIUM

Good value: >=8

6
MSI B85M Eco has 6 USB ports (rear I/O), which is fewer than 64.2% of motherboards and equal to 32.9% of motherboards.
Total USB ports (including headers)
What it is: The total number of USB ports supported when rear ports and internal headers are counted together.
When it matters: When you want to know the board's full USB expansion potential.

Importance: MEDIUM

Good value: >=14

12
MSI B85M Eco has 12 USB ports (including headers), which is fewer than 72.4% of motherboards and equal to 16.6% of motherboards.
Total USB-C ports (rear I/O)
What it is: The total number of rear USB-C ports on the motherboard.
When it matters: When you want more USB-C devices connected without adapters.

Importance: MEDIUM

Good value: >=1

0
MSI B85M Eco has 0 USB-C ports (rear I/O), which is fewer than 64.6% of motherboards and equal to 35.4% of motherboards.
Total USB-C ports (including headers)
What it is: The total number of USB-C ports supported when rear ports and internal headers are counted together.
When it matters: When you want more USB-C connectivity across the whole build.

Importance: MEDIUM

Good value: >=2

0
MSI B85M Eco has 0 USB-C ports (including headers), which is fewer than 69.6% of motherboards and equal to 30.4% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
What it is: The number of rear USB 3.2 Gen2x2 Type-C ports on the motherboard.
When it matters: When you want very fast USB-C connectivity on the rear I/O.

Importance: HIGH

Good value: >=1

0
MSI B85M Eco has 0 USB 3.2 Gen2x2 ports (USB-C), which is equal to 81.6% of motherboards.
Show more
LAN speed
What it is: The maximum wired Ethernet speed supported by the motherboard.
When it matters: When you want faster wired networking.

Importance: HIGH

Good value: 2.5GbE

1 Gbps
MSI B85M Eco supports LAN speeds up to 1 Gbps, which is lower than that of 50.8% of motherboards and equal to that of 49.1% of motherboards.
LAN controller
What it is: The model of onboard Ethernet controller used by the motherboard.
When it matters: When you compare networking hardware quality and features.

Importance: MEDIUM

Intel I218-V
MSI B85M Eco uses the Intel I218-V LAN controller, which is less advanced than that of 60.1% of motherboards and equal to that of 2.7% of motherboards.
N. of RJ45 ports
What it is: The number of wired Ethernet ports on the motherboard.
When it matters: When you need one or more wired network connections.

Importance: LOW

1
MSI B85M Eco has 1 RJ45 ports, which is equal to 85.6% of motherboards.
Wi-Fi connectivity
What it is: Shows whether the motherboard includes onboard Wi-Fi hardware instead of requiring a separate adapter.
When it matters: When you want wireless networking without adding an extra card.

Importance: MEDIUM

no
MSI B85M Eco does not support Wi-Fi connectivity. 49.1% of motherboards support this feature.
Wi-Fi version
What it is: The supported Wi-Fi generation, such as Wi-Fi 6 or Wi-Fi 7.
When it matters: When you care about wireless speed and router compatibility.

Importance: MEDIUM

Good value: Wi-Fi 6E (802.11ax)

N/A
Show more
Audio codec
What it is: The onboard audio codec used by the motherboard.
When it matters: When sound quality from the built-in audio matters to you.

Importance: MEDIUM

Realtek ALC887
MSI B85M Eco uses the Realtek ALC887 audio codec, which is less advanced than that of 89% of motherboards and equal to that of 7.9% of motherboards.
Audio channels
What it is: The audio channel configuration supported by the onboard sound solution.
When it matters: When you want surround sound from the motherboard audio outputs.

Importance: LOW

Good value: 7.1

7.1
MSI B85M Eco offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
full 7.1 needs front panel audio.
Audio SNR
What it is: The signal-to-noise ratio of the onboard audio solution.
When it matters: When you care about cleaner onboard audio output.

Importance: MEDIUM

Good value: >=120 dB

97 dB
MSI B85M Eco has an audio SNR of 97 dB, which is lower than that of 67.3% of motherboards and equal to that of 16.8% of motherboards.
Headphone amp support
What it is: Shows whether the onboard audio path includes dedicated headphone amplification for harder-to-drive headsets.
When it matters: When you use harder-to-drive headphones from the onboard audio.

Importance: LOW

?
N. of 3.5mm audio jacks
What it is: The number of rear 3.5mm audio jacks on the motherboard.
When it matters: When you want more analog audio connection options.

Importance: LOW

Good value: >=5

3
MSI B85M Eco has 3 3.5mm audio jacks, which is fewer than 50.3% of motherboards and equal to 38.2% of motherboards.
Show more
VRM phases
What it is: The number of power-delivery phases used by the motherboard VRM.
When it matters: When you care about CPU power delivery and overclocking headroom.

Importance: HIGH

Good value: >=12

4
MSI B85M Eco has 4 VRM phases, which is fewer than 97.3% of motherboards and equal to 1.5% of motherboards.
N. of CPU power connectors
What it is: The number of CPU power connectors on the motherboard.
When it matters: When you care about power delivery for higher-end CPUs.

Importance: HIGH

Good value: >=2

1
MSI B85M Eco has 1 CPU power connectors, which is equal to 54.5% of motherboards.
N. of fan headers
What it is: The number of headers available for case or CPU fans.
When it matters: When your build uses several fans.

Importance: MEDIUM

Good value: >=6

3
MSI B85M Eco has 3 fan headers, which is fewer than 76.7% of motherboards and equal to 15% of motherboards.
Pump header
What it is: Shows whether the motherboard includes a dedicated header designed for a liquid-cooling pump.
When it matters: When you build with an AIO or custom liquid cooling loop.

Importance: MEDIUM

no
MSI B85M Eco does not have a pump header. 77% of motherboards include this feature.
Pump header max current
What it is: The maximum current the dedicated pump header can supply.
When it matters: When you want to make sure the pump header can power your cooling setup.

Importance: LOW

Good value: >=2 A

0 A
MSI B85M Eco supports up to 0 A on the pump header, which is lower than that of 74.3% of motherboards and equal to that of 25.7% of motherboards.
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MSI B85M Eco vs the average motherboard

  • 1 more PCI slots
    MSI B85M Eco has more PCI slots than the average motherboard (1 vs 0). The average motherboard has 0 PCI slot/s.
    What it is: The number of legacy PCI slots on the motherboard.
    When it matters: When you need compatibility with older expansion cards.

    Importance: LOW

    MSI B85M Eco has more PCI slots than the average motherboard (1 vs 0). The average motherboard has 0 PCI slot/s.1 vs 0
  • 2 more SATA 2 connectors
    MSI B85M Eco has more SATA 2 connectors than the average motherboard (2 vs 0). The average motherboard has 0 SATA 2 connectors.
    What it is: The number of SATA 3Gb/s connectors on the motherboard.
    When it matters: When you still use older SATA devices.

    Importance: LOW

    MSI B85M Eco has more SATA 2 connectors than the average motherboard (2 vs 0). The average motherboard has 0 SATA 2 connectors.2 vs 0
  • 2 more USB 2.0 headers
    MSI B85M Eco has more USB 2.0 headers than the average motherboard (4 vs 2). The average motherboard has 2 USB 2.0 header/s.
    What it is: The number of internal USB 2.0 headers available for case connections.
    When it matters: When your case or accessories need internal USB connections.

    Importance: LOW

    MSI B85M Eco has more USB 2.0 headers than the average motherboard (4 vs 2). The average motherboard has 2 USB 2.0 header/s.4 vs 2
  • More BIOS update options
    MSI B85M Eco has more BIOS update options than the average motherboard (UEFI utility, flashback, Windows app, DOS vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
    What it is: The available ways to update the motherboard BIOS.
    When it matters: When you want easier BIOS maintenance and recovery.

    Importance: LOW

    MSI B85M Eco has more BIOS update options than the average motherboard (UEFI utility, flashback, Windows app, DOS vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.UEFI utility, flashback, Windows app, DOS vs UEFI utility, flashback, Windows app
  • 1 more DVI outputs
    MSI B85M Eco has more DVI outputs than the average motherboard (1 vs 0). The average motherboard has 0 DVI outputs.
    What it is: The number of DVI video outputs on the motherboard.
    When it matters: When you plan to use older compatible monitors.

    Importance: LOW

    MSI B85M Eco has more DVI outputs than the average motherboard (1 vs 0). The average motherboard has 0 DVI outputs.1 vs 0
  • Includes VGA connector
    MSI B85M Eco has a VGA connector, while the average motherboard does not. 22% of motherboards include a VGA connector.
    What it is: Shows whether the rear I/O includes an analog VGA display output.
    When it matters: When you need compatibility with older displays or projectors.

    Importance: LOW

    MSI B85M Eco has a VGA connector, while the average motherboard does not. 22% of motherboards include a VGA connector.
  • 2.67x cheaper
    MSI B85M Eco is cheaper than the average motherboard (£60 vs £160).
    MSI B85M Eco is cheaper than the average motherboard (£60 vs £160).£60 vs £160
  • Includes onboard power button
    MSI B85M Eco has an onboard power button, while the average motherboard does not. 27.7% of motherboards include an onboard power button.
    What it is: Shows whether the motherboard includes a built-in power button on the PCB itself.
    When it matters: When you test or troubleshoot the board outside a case.

    Importance: LOW

    MSI B85M Eco has an onboard power button, while the average motherboard does not. 27.7% of motherboards include an onboard power button.
  • More BIOS update options
    MSI B85M Eco has more BIOS update options than the average motherboard (UEFI utility, flashback, Windows app, DOS vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
  • Includes onboard power button
    MSI B85M Eco has an onboard power button, while the average motherboard does not. 27.7% of motherboards include an onboard power button.
  • 2 more SATA 2 connectors
    MSI B85M Eco has more SATA 2 connectors than the average motherboard (2 vs 0). The average motherboard has 0 SATA 2 connectors.
  • 1 more PCI slots
    MSI B85M Eco has more PCI slots than the average motherboard (1 vs 0). The average motherboard has 0 PCI slot/s.
  • 1 more PCIe x1 slots
    MSI B85M Eco has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 2 more USB 2.0 headers
    MSI B85M Eco has more USB 2.0 headers than the average motherboard (4 vs 2). The average motherboard has 2 USB 2.0 header/s.
  • 1 more DVI outputs
    MSI B85M Eco has more DVI outputs than the average motherboard (1 vs 0). The average motherboard has 0 DVI outputs.
  • Includes VGA connector
    MSI B85M Eco has a VGA connector, while the average motherboard does not. 22% of motherboards include a VGA connector.
  • 2 more USB 2.0 ports
    MSI B85M Eco has more USB 2.0 ports than the average motherboard (4 vs 2). The average motherboard has 2 USB 2.0 port/s.

Total
Overall
Platform & Features
Storage
Expansion
Ports & USB
  • More basic motherboard chipset
    MSI B85M Eco has more basic motherboard chipset than the average motherboard (Intel B85 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • No BIOS flashback support
    MSI B85M Eco does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • Not suitable for gaming
    MSI B85M Eco is not suitable for gaming, while the average motherboard is. 86.3% of motherboards are suitable for gaming.
  • Older CPU socket
    MSI B85M Eco has older CPU socket than the average motherboard (LGA 1,150 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • Not ready for Windows 11
    MSI B85M Eco is not ready for Windows 11, while the average motherboard is. 77.1% of motherboards are ready for Windows 11.
  • No debug LED indicators
    MSI B85M Eco does not have debug LED indicators, while the average motherboard does. 78.8% of motherboards include debug LED indicators.
  • No automatic overclocking
    MSI B85M Eco does not support automatic overclocking, while the average motherboard does. 74% of motherboards support automatic overclocking.
  • Narrower Windows support
    MSI B85M Eco has narrower Windows support than the average motherboard (Windows 10, Windows 8.1, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
  • Less versatile form factor
    MSI B85M Eco has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
  • 7 years older release date
    MSI B85M Eco is older than the average motherboard (2,014 vs 2,021). The average motherboard was released in 2,021.
    July 2014
  • 75% less maximum memory capacity
    MSI B85M Eco has fewer maximum memory capacity than the average motherboard (32 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • Older DDR memory generation
    MSI B85M Eco has older DDR memory generation than the average motherboard (DDR3 vs DDR4). The average motherboard supports DDR4 memory.
  • 65.2% lower maximum RAM speed
    MSI B85M Eco has a lower maximum RAM speed than the average motherboard (1,600 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • 67.6% lower overclocked RAM speed
    MSI B85M Eco has a lower overclocked RAM speed than the average motherboard (1,600 MT/s vs 4,933 MT/s). The average motherboard supports overclocked RAM speed of 4,933 MT/s.
  • 2 fewer M.2 sockets
    MSI B85M Eco has fewer M.2 sockets than the average motherboard (0 vs 2). The average motherboard has 2 M.2 socket/s.
  • No NVMe RAID support
    MSI B85M Eco does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • Fewer RAID options
    MSI B85M Eco has fewer RAID options than the average motherboard (no vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
  • No PCIe bifurcation support
    MSI B85M Eco does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • No multi-GPU support
    MSI B85M Eco does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
    Single PCIe x16 slot only.
  • 2 fewer rear USB ports
    MSI B85M Eco has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
  • 1 fewer rear USB-C ports
    MSI B85M Eco has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
  • 3 fewer total USB connections
    MSI B85M Eco has fewer total USB connections than the average motherboard (12 vs 15). The average motherboard has 15 total USB connections.
  • 1 fewer USB 3.2 Gen2 ports
    MSI B85M Eco has fewer USB 3.2 Gen2 ports than the average motherboard (0 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 2 fewer USB 3.2 Gen1 ports
    MSI B85M Eco has fewer USB 3.2 Gen1 ports than the average motherboard (2 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • 1 fewer DisplayPort outputs
    MSI B85M Eco has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
  • Older HDMI version
    MSI B85M Eco has older HDMI version than the average motherboard (1.4 vs 2.1). The average motherboard supports HDMI 2.1.
  • 1 fewer total USB-C connections
    MSI B85M Eco has fewer total USB-C connections than the average motherboard (0 vs 1). The average motherboard has 1 total USB-C connections.
  • 60% lower LAN speed
    MSI B85M Eco has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.
  • No Wi-Fi antenna included
    MSI B85M Eco does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • More basic audio codec
    MSI B85M Eco has more basic audio codec than the average motherboard (Realtek ALC887 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • 18 dB lower audio SNR
    MSI B85M Eco has a lower audio SNR than the average motherboard (97 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • 2 fewer 3.5mm audio jacks
    MSI B85M Eco has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
  • No optical S/PDIF out
    MSI B85M Eco does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • Fewer VRM phases
    MSI B85M Eco has fewer VRM phases than the average motherboard (4 vs 10). The average motherboard has 10 VRM phase/s.
  • 2 fewer ARGB headers
    MSI B85M Eco has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
  • No pump header
    MSI B85M Eco does not have a pump header, while the average motherboard does. 77% of motherboards include a pump header.
  • 2 fewer fan headers
    MSI B85M Eco has fewer fan headers than the average motherboard (3 vs 5). The average motherboard has 5 fan header/s.
  • No onboard RGB lighting
    MSI B85M Eco does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • 1 fewer RGB headers
    MSI B85M Eco has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
  • 2 A lower pump header current limit
    MSI B85M Eco has a lower pump header current than the average motherboard (0 A vs 2 A). The average motherboard provides pump header current of 2 A.
  • More basic motherboard chipset
    MSI B85M Eco has more basic motherboard chipset than the average motherboard (Intel B85 vs Intel B860). The average motherboard uses Intel B860 chipset.
    What it is: The chipset that defines the motherboard platform and many of its features.
    When it matters: When you compare platform features, connectivity, and CPU support.

    Importance: HIGH

    MSI B85M Eco has more basic motherboard chipset than the average motherboard (Intel B85 vs Intel B860). The average motherboard uses Intel B860 chipset.Intel B85 vs Intel B860
  • 60% lower LAN speed
    MSI B85M Eco has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.
    What it is: The maximum wired Ethernet speed supported by the motherboard.
    When it matters: When you want faster wired networking.

    Importance: HIGH

    Good value: 2.5GbE

    MSI B85M Eco has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.1 Gbps vs 2.5 Gbps
  • 75% less maximum memory capacity
    MSI B85M Eco has fewer maximum memory capacity than the average motherboard (32 GB vs 128 GB). The average motherboard supports 128 GB of memory.
    What it is: The largest total amount of RAM the motherboard supports.
    When it matters: When you plan a build with very high memory capacity.

    Importance: HIGH

    Good value: >=128 GB

    MSI B85M Eco has fewer maximum memory capacity than the average motherboard (32 GB vs 128 GB). The average motherboard supports 128 GB of memory.32 GB vs 128 GB
  • 2 fewer M.2 sockets
    MSI B85M Eco has fewer M.2 sockets than the average motherboard (0 vs 2). The average motherboard has 2 M.2 socket/s.
    What it is: The number of M.2 slots available on the motherboard.
    When it matters: When you want room for more NVMe or M.2 drives.

    Importance: HIGH

    Good value: >=3

    MSI B85M Eco has fewer M.2 sockets than the average motherboard (0 vs 2). The average motherboard has 2 M.2 socket/s.0 vs 2
  • No NVMe RAID support
    MSI B85M Eco does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
    What it is: Shows whether the board supports RAID configurations that use NVMe SSDs.
    When it matters: When you plan to use multiple NVMe drives in RAID.

    Importance: LOW

    MSI B85M Eco does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 2 fewer rear USB ports
    MSI B85M Eco has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    What it is: The total number of rear USB ports available on the motherboard.
    When it matters: When you use many USB devices directly from the back of the PC.

    Importance: MEDIUM

    Good value: >=8

    MSI B85M Eco has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.6 vs 8
  • Fewer RAID options
    MSI B85M Eco has fewer RAID options than the average motherboard (no vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
    What it is: The RAID modes officially supported by the motherboard storage platform.
    When it matters: When you plan to use multiple drives in a RAID setup.

    Importance: MEDIUM

    MSI B85M Eco has fewer RAID options than the average motherboard (no vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
  • Older DDR memory generation
    MSI B85M Eco has older DDR memory generation than the average motherboard (DDR3 vs DDR4). The average motherboard supports DDR4 memory.
    What it is: The RAM generation the motherboard supports, such as DDR4 or DDR5.
    When it matters: When you need the board to match a certain memory platform.

    Importance: HIGH

    Good value: DDR5

    MSI B85M Eco has older DDR memory generation than the average motherboard (DDR3 vs DDR4). The average motherboard supports DDR4 memory.DDR3 vs DDR4
Total
Overall
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling

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Third-party reviews

United Kingdom
amazon
3.8
45 Reviews
United States
Amazon_logo.png
3.6
46 Reviews

(Reviews last updated: May 2026)

What customers like about MSI B85M Eco?

  • Excellent power efficiency and low energy consumption, especially at idle
  • User-friendly and intuitive BIOS (Click BIOS 4) interface
  • Stable performance for general use and small business workstations
  • ECO Center Pro software allows easy disabling of unused components (like LEDs or extra ports) to save power
  • Good build quality using Military Class 4 components
  • Unique green and white color scheme that stands out

What customers dislike about MSI B85M Eco?

  • Lack of overclocking support for CPUs, which is limited by the B85 chipset
  • No RAID support, which may be a drawback for certain storage setups
  • Limited number of fan headers (only 3 total)
  • The manual is considered basic and could be more detailed for first-time builders
  • Physical layout issues, such as USB 3.0 header pins protruding in a way that makes them prone to bending

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