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ASUS Prime B660 Plus D4 Review | 107 Data compared

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  • Avg. price: ~£110
  • CPU socket: LGA 1700
  • Chipset: Intel B660
  • Form factor: ATX

ASUS Prime B660 Plus D4 review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

6.6

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%

6.3

Technical Score

10.0%

9.3

User score

Good
6.3

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%

7.0

Memory

16.0%

6.6

Platform & Features

16.0%

7.1

Storage

15.0%

7.3

Network

13.0%

4.3

Ports & USB

8.0%

3.4

Expansion

8.0%

6.4

Power & Cooling

5.0%

6.6

Audio

Good
9.3

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%

9.0

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.4
(489)
amazon
4.5
(423)
amazon
3.1
(8)
United States
Amazon_logo.png
4.6
(437)

(Reviews last updated: May 2026)

Exceptional
  • 6.1
    Gaming

    Score components:

    28.0%

    5.2

    VRM phases

    22.0%

    7.8

    N. of M.2 sockets

    18.0%

    10

    LAN speed

    17.0%

    5.9

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

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Best prices in UK

Best rankings

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

Verdict

The Asus Prime B660-Plus D4 is an ATX motherboard featuring the Intel LGA 1700 socket, designed for 12th, 13th, and 14th Gen Intel Core processors. It is equipped with four DIMM slots supporting up to 128GB of DDR4 memory at overclocked speeds of 5066MHz, alongside three M.2 slots (two supporting PCIe 4.0 x4) and a PCIe 4.0 x16 expansion slot for high-speed storage and graphics. Key characteristics include 2.5Gb Ethernet, a rear USB 3.2 Gen 2x2 Type-C port, and a Thunderbolt 4 header for extensive connectivity. Its primary pros are its affordable price point, robust cooling features like VRM and M.2 heatsinks, and a user-friendly UEFI BIOS. However, cons include a relatively modest 8-stage power design that may struggle with sustained high-power loads on top-tier CPUs like the i9, a lack of built-in Wi-Fi, and a limited number of only four SATA ports.

Technical Specifications of ASUS Prime B660 Plus D4

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%

7.0

Memory

16.0%

6.6

Platform & Features

16.0%

7.1

Storage

15.0%

7.3

Network

13.0%

4.3

Ports & USB

8.0%

3.4

Expansion

8.0%

6.4

Power & Cooling

5.0%

6.6

Audio

6.3
ASUS Prime B660 Plus D4 has a technical score of 6.28 points, which is lower than that of 50.9% 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%

9.0

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.4
(489)
amazon
4.5
(423)
amazon
3.1
(8)
United States
Amazon_logo.png
4.6
(437)

(Reviews last updated: May 2026)

9.3
ASUS Prime B660 Plus D4 has a user score of 9.28 points, which is higher than that of 90.6% 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.
10
ASUS Prime B660 Plus D4 has a popularity of 10 points, which is higher than 79.9% 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%

6.6

Overall score

40.0%

9.9

Price

7.6
ASUS Prime B660 Plus D4 has a quality-to-price ratio of 7.6 points, which is higher than 57% 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

Asus
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 1700
ASUS Prime B660 Plus D4 uses the LGA 1700 CPU socket, which is more advanced than that of 55% of motherboards and equal to that of 22.7% 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 B660
ASUS Prime B660 Plus D4 uses the Intel B660 chipset, which is more advanced than that of 57.6% of motherboards and equal to that of 2.8% 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

ATX
ASUS Prime B660 Plus D4 has the ATX form factor, which is more versatile than that of 47.8% of motherboards and equal to that of 52.2% 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

DDR4
ASUS Prime B660 Plus D4 uses DDR4 memory, which is newer than that of 13.6% of motherboards and equal to that of 51% 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
ASUS Prime B660 Plus D4 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

128 GB
ASUS Prime B660 Plus D4 supports up to 128 GB of memory, which is more than 40.4% of motherboards and equal to 32.1% 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
ASUS Prime B660 Plus D4 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

5,066 MT/s
ASUS Prime B660 Plus D4 supports memory speeds up to 5066 MT/s, which is higher than that of 59.3% of motherboards and equal to that of 0.3% 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

3
ASUS Prime B660 Plus D4 has 3 M.2 sockets, which is more than 65.4% of motherboards and equal to 18.6% 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

2x PCIe 4.0 x4, 1x PCIe 4.0 x2
ASUS Prime B660 Plus D4 offers 2x PCIe 4.0x4, 1x PCIe 4.0x2 for M.2 slot interfaces, which is faster than that of 73.3% of motherboards and equal to that of 0.2% of motherboards.
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
ASUS Prime B660 Plus D4 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

0/1/5/10
ASUS Prime B660 Plus D4 supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% of motherboards.
SATA only
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
ASUS Prime B660 Plus D4 does not support NVMe RAID. 59.8% of motherboards support this feature.
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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
ASUS Prime B660 Plus D4 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

1
ASUS Prime B660 Plus D4 has 1 PCIe 4.0x16 slots, which is more than 55.6% of motherboards and equal to 35.3% 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
ASUS Prime B660 Plus D4 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

?
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
ASUS Prime B660 Plus D4 does not support PCIe bifurcation. 61% of motherboards support this feature.
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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
ASUS Prime B660 Plus D4 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

13
ASUS Prime B660 Plus D4 has 13 USB ports (including headers), which is fewer than 64.7% of motherboards and equal to 7.6% 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

1
ASUS Prime B660 Plus D4 has 1 USB-C ports (rear I/O), which is more than 35.4% of motherboards and equal to 48.8% 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

2
ASUS Prime B660 Plus D4 has 2 USB-C ports (including headers), which is more than 51.8% of motherboards and equal to 32.8% 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

1
ASUS Prime B660 Plus D4 has 1 USB 3.2 Gen2x2 ports (USB-C), which is more than 81.7% of motherboards and equal to 18.1% of motherboards.
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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

2.5 Gbps
ASUS Prime B660 Plus D4 supports LAN speeds up to 2.5 Gbps, which is higher than that of 49.2% of motherboards and equal to that of 41.5% 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

?
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
ASUS Prime B660 Plus D4 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
ASUS Prime B660 Plus D4 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 ALC897
ASUS Prime B660 Plus D4 uses the Realtek ALC897 audio codec, which is less advanced than that of 50.8% of motherboards and equal to that of 29.3% 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
ASUS Prime B660 Plus D4 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

108 dB
ASUS Prime B660 Plus D4 has an audio SNR of 108 dB, which is lower than that of 61.8% of motherboards and equal to that of 2% 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

no
ASUS Prime B660 Plus D4 does not support a headphone amp. 63% of motherboards support this feature.
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
ASUS Prime B660 Plus D4 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

8
ASUS Prime B660 Plus D4 has 8 VRM phases, which is fewer than 71.9% of motherboards and equal to 6.3% 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
ASUS Prime B660 Plus D4 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

5
ASUS Prime B660 Plus D4 has 5 fan headers, which is more than 35.8% of motherboards and equal to 14.5% 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

yes
ASUS Prime B660 Plus D4 has a pump header. 23.1% 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

1 A
ASUS Prime B660 Plus D4 supports up to 1 A on the pump header, which is lower than that of 58.4% of motherboards and equal to that of 15.9% of motherboards.
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ASUS Prime B660 Plus D4 vs the average motherboard

  • 1 more USB 3.2 Gen2x2 USB-C ports
    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2x2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2x2 USB-C port/s.
    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

    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2x2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2x2 USB-C port/s.1 vs 0
  • Newer CPU socket
    ASUS Prime B660 Plus D4 has newer CPU socket than the average motherboard (LGA 1,700 vs LGA 1,151). The average motherboard uses LGA 1,151 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

    ASUS Prime B660 Plus D4 has newer CPU socket than the average motherboard (LGA 1,700 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.LGA 1700 vs LGA 1151
  • 1 more M.2 sockets
    ASUS Prime B660 Plus D4 has more M.2 sockets than the average motherboard (3 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

    ASUS Prime B660 Plus D4 has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.3 vs 2
  • 1 more PCIe 4.0x16 slots
    ASUS Prime B660 Plus D4 has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
    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

    ASUS Prime B660 Plus D4 has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.1 vs 0
  • 1 more USB 3.2 Gen2 ports
    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2 ports than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
    What it is: The number of rear USB 3.2 Gen2 Type-A ports on the motherboard.
    When it matters: When you want faster USB-A ports for storage or accessories.

    Importance: MEDIUM

    Good value: >=2

    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2 ports than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.2 vs 1
  • 1 more USB4 or Thunderbolt headers
    ASUS Prime B660 Plus D4 has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
    What it is: The number of internal USB4 or Thunderbolt headers on the motherboard.
    When it matters: When you plan to add high-speed front USB-C or Thunderbolt connections.

    Importance: MEDIUM

    ASUS Prime B660 Plus D4 has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.1 vs 0
  • 1 more RGB headers
    ASUS Prime B660 Plus D4 has more RGB headers than the average motherboard (2 vs 1). The average motherboard has 1 RGB header/s.
    What it is: The number of 4-pin RGB headers available on the motherboard.
    When it matters: When you want to connect more standard RGB lighting devices.

    Importance: LOW

    Good value: >=2

    ASUS Prime B660 Plus D4 has more RGB headers than the average motherboard (2 vs 1). The average motherboard has 1 RGB header/s.2 vs 1
  • 1 more USB 3.2 Gen2 headers
    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2 headers than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 header/s.
    What it is: The number of internal USB 3.2 Gen2 headers for front-panel USB-C ports.
    When it matters: When your case includes front USB-C connectivity.

    Importance: MEDIUM

    Good value: >=1

    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2 headers than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 header/s.1 vs 0
  • Newer CPU socket
    ASUS Prime B660 Plus D4 has newer CPU socket than the average motherboard (LGA 1,700 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • 1 more M.2 sockets
    ASUS Prime B660 Plus D4 has more M.2 sockets than the average motherboard (3 vs 2). The average motherboard has 2 M.2 socket/s.
  • 1 more PCIe 4.0x16 slots
    ASUS Prime B660 Plus D4 has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
  • 1 more PCIe x1 slots
    ASUS Prime B660 Plus D4 has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 1 more USB 3.2 Gen2x2 USB-C ports
    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2x2 USB-C ports than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2x2 USB-C port/s.
  • 1 more USB 3.2 Gen2 ports
    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2 ports than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 1 more USB4 or Thunderbolt headers
    ASUS Prime B660 Plus D4 has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
  • 1 more USB 3.2 Gen2 headers
    ASUS Prime B660 Plus D4 has more USB 3.2 Gen2 headers than the average motherboard (1 vs 0). The average motherboard has 0 USB 3.2 Gen2 header/s.
  • Includes VGA connector
    ASUS Prime B660 Plus D4 has a VGA connector, while the average motherboard does not. 22% of motherboards include a VGA connector.
  • 1 more total USB-C connections
    ASUS Prime B660 Plus D4 has more total USB-C connections than the average motherboard (2 vs 1). The average motherboard has 1 total USB-C connections.
  • 1 more RGB headers
    ASUS Prime B660 Plus D4 has more RGB headers than the average motherboard (2 vs 1). The average motherboard has 1 RGB header/s.
  • 1 more ARGB headers
    ASUS Prime B660 Plus D4 has more ARGB headers than the average motherboard (3 vs 2). The average motherboard has 2 ARGB header/s.

Total
Overall
Platform & Features
Storage
Expansion
Ports & USB
Power & Cooling
  • More basic motherboard chipset
    ASUS Prime B660 Plus D4 has more basic motherboard chipset than the average motherboard (Intel B660 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • No BIOS flashback support
    ASUS Prime B660 Plus D4 does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • Not suitable for gaming
    ASUS Prime B660 Plus D4 is not suitable for gaming, while the average motherboard is. 86.3% of motherboards are suitable for gaming.
  • Fewer BIOS update options
    ASUS Prime B660 Plus D4 has fewer BIOS update options than the average motherboard (UEFI utility, Windows app vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
  • No automatic overclocking
    ASUS Prime B660 Plus D4 does not support automatic overclocking, while the average motherboard does. 74% of motherboards support automatic overclocking.
    CPU auto-OC not supported
  • No NVMe RAID support
    ASUS Prime B660 Plus D4 does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • Slower M.2 slot interfaces
    ASUS Prime B660 Plus D4 has slower M.2 slot interfaces than the average motherboard (2x PCIe 4.0x4, 1x PCIe 4.0x2 vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
  • No PCIe bifurcation support
    ASUS Prime B660 Plus D4 does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • No multi-GPU support
    ASUS Prime B660 Plus D4 does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • 2 fewer rear USB ports
    ASUS Prime B660 Plus D4 has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
  • 3 fewer USB 3.2 Gen1 ports
    ASUS Prime B660 Plus D4 has fewer USB 3.2 Gen1 ports than the average motherboard (1 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • 2 fewer total USB connections
    ASUS Prime B660 Plus D4 has fewer total USB connections than the average motherboard (13 vs 15). The average motherboard has 15 total USB connections.
  • 1 fewer PS/2 ports
    ASUS Prime B660 Plus D4 has fewer PS/2 ports than the average motherboard (0 vs 1). The average motherboard has 1 PS/2 port/s.
  • No Wi-Fi antenna included
    ASUS Prime B660 Plus D4 does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • No headphone amp support
    ASUS Prime B660 Plus D4 does not support a headphone amp, while the average motherboard does. 63% of motherboards support a headphone amp.
  • More basic audio codec
    ASUS Prime B660 Plus D4 has more basic audio codec than the average motherboard (Realtek ALC897 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • 2 fewer 3.5mm audio jacks
    ASUS Prime B660 Plus D4 has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
  • 7 dB lower audio SNR
    ASUS Prime B660 Plus D4 has a lower audio SNR than the average motherboard (108 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • No optical S/PDIF out
    ASUS Prime B660 Plus D4 does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • Fewer VRM phases
    ASUS Prime B660 Plus D4 has fewer VRM phases than the average motherboard (8 vs 10). The average motherboard has 10 VRM phase/s.
  • No onboard RGB lighting
    ASUS Prime B660 Plus D4 does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • 1 A lower pump header current limit
    ASUS Prime B660 Plus D4 has a lower pump header current than the average motherboard (1 A vs 2 A). The average motherboard provides pump header current of 2 A.
  • More basic motherboard chipset
    ASUS Prime B660 Plus D4 has more basic motherboard chipset than the average motherboard (Intel B660 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

    ASUS Prime B660 Plus D4 has more basic motherboard chipset than the average motherboard (Intel B660 vs Intel B860). The average motherboard uses Intel B860 chipset.Intel B660 vs Intel B860
  • No NVMe RAID support
    ASUS Prime B660 Plus D4 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

    ASUS Prime B660 Plus D4 does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 2 fewer rear USB ports
    ASUS Prime B660 Plus D4 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

    ASUS Prime B660 Plus D4 has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.6 vs 8
  • No BIOS flashback support
    ASUS Prime B660 Plus D4 does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
    What it is: Shows whether the motherboard can update BIOS without needing a fully installed or supported CPU to boot first.
    When it matters: When you may need to update BIOS before the system can boot.

    Importance: MEDIUM

    ASUS Prime B660 Plus D4 does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • No PCIe bifurcation support
    ASUS Prime B660 Plus D4 does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
    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

    ASUS Prime B660 Plus D4 does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • No Wi-Fi antenna included
    ASUS Prime B660 Plus D4 does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
    What it is: Shows whether the external Wi-Fi antenna is included with the motherboard package.
    When it matters: When the board has Wi-Fi and you want it ready to use right away.

    Importance: LOW

    ASUS Prime B660 Plus D4 does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • 3 fewer USB 3.2 Gen1 ports
    ASUS Prime B660 Plus D4 has fewer USB 3.2 Gen1 ports than the average motherboard (1 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
    What it is: The number of rear USB 3.2 Gen1 Type-A ports on the motherboard.
    When it matters: When you want more standard USB ports with faster transfer speeds.

    Importance: MEDIUM

    Good value: >=4

    ASUS Prime B660 Plus D4 has fewer USB 3.2 Gen1 ports than the average motherboard (1 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.1 vs 4
  • Not suitable for gaming
    ASUS Prime B660 Plus D4 is not suitable for gaming, while the average motherboard is. 86.3% of motherboards are suitable for gaming.
    What it is: An overall indication of whether the motherboard is well equipped for gaming builds.
    When it matters: When you want features that suit a gaming-oriented PC.

    Importance: MEDIUM

    ASUS Prime B660 Plus D4 is not suitable for gaming, while the average motherboard is. 86.3% of motherboards are suitable for gaming.
Total
Platform & Features
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling

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Third-party reviews

United Kingdom
amazon
4.4
489 Reviews
amazon
4.5
423 Reviews
amazon
3.1
8 Reviews
United States
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4.6
437 Reviews

(Reviews last updated: May 2026)

What customers like about ASUS Prime B660 Plus D4?

  • Excellent value for budget-conscious DIY builders
  • Solid connectivity including 2.5 Gb Ethernet and Thunderbolt 4 header support
  • Three M.2 slots (PCIe 4.0) for fast storage expansion
  • Includes a rear USB 3.2 Gen 2x2 Type-C port for 20Gbps speeds
  • Easy to install with clear plug-in connections
  • Reliable performance for mid-range CPUs like the Intel i5-12400

What customers dislike about ASUS Prime B660 Plus D4?

  • VRM cooling is limited; may struggle or overheat with high-power i7 or i9 CPUs
  • Lacks integrated Wi-Fi (requires separate card or dongle)
  • Limited number of fan headers, often requiring splitters for multi-fan builds
  • Basic aesthetics with no built-in RGB lighting
  • Reports of minor reliability issues, such as failing HDD LED circuits or RAM slots
  • Software setup for RGB control (Armoury Crate) can be unintuitive

Video reviews

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