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GIGABYTE X299 UD4 EX Review | 107 Data compared

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  • Avg. price in UK: ~£300
  • Avg. price in US: ~$410
  • CPU socket: LGA 2066
  • Chipset: Intel X299
  • Form factor: ATX

GIGABYTE X299 UD4 EX 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%

6.6

Technical Score

10.0%

?

User score

Good
6.6

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%

8.6

Memory

16.0%

6.6

Platform & Features

16.0%

6.5

Storage

15.0%

5.5

Network

13.0%

4.9

Ports & USB

8.0%

4.6

Expansion

8.0%

7.1

Power & Cooling

5.0%

9.1

Audio

Good
?

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%

?

User reviews

30.0%

?

Popularity

  • 5.1
    Gaming

    Score components:

    28.0%

    9.0

    VRM phases

    22.0%

    5.5

    N. of M.2 sockets

    18.0%

    4.6

    LAN speed

    17.0%

    2.5

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

  • No image
No image

Best prices in UK

    N/A~ £300

Best rankings

?

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

Verdict

The Gigabyte X299 UD4 EX is an LGA 2066 ATX motherboard for Intel Core X-series processors, featuring 8 DDR4 DIMM slots for quad-channel memory and a robust, server-class digital power design. Key features include dual PCIe Gen3 x4 M.2 slots, 3-way graphics support, and an included GC-ALPINE RIDGE card for dual Thunderbolt 3 connectivity. While offering high durability, the board notably lacks integrated Wi-Fi and Bluetooth, representing a more minimalist, performance-focused option within the X299 lineup.

Technical Specifications of GIGABYTE X299 UD4 EX

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%

?

Memory

16.0%

?

Platform & Features

16.0%

?

Storage

15.0%

?

Network

13.0%

?

Ports & USB

8.0%

?

Expansion

8.0%

?

Power & Cooling

5.0%

?

Audio

6.6
GIGABYTE X299 UD4 EX has a technical score of 6.59 points, which is higher than that of 54.9% 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%

0.0

User reviews

30.0%

1.0

Popularity

?
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.
1.0
GIGABYTE X299 UD4 EX has a popularity of 1 points, which is lower than 77.9% 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%

8.9

Price

7.3
GIGABYTE X299 UD4 EX has a quality-to-price ratio of 7.3 points, which is higher than 46.1% 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

Gigabyte
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 2066
GIGABYTE X299 UD4 EX uses the LGA 2066 CPU socket, which is more advanced than that of 51.8% of motherboards and equal to that of 2% 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 X299
GIGABYTE X299 UD4 EX uses the Intel X299 chipset, which is less advanced than that of 65.4% of motherboards and equal to that of 2% 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
GIGABYTE X299 UD4 EX 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
GIGABYTE X299 UD4 EX 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

8
GIGABYTE X299 UD4 EX has 8 Memory slots, which is more than 94% of motherboards and equal to 5.7% 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

256 GB
GIGABYTE X299 UD4 EX supports up to 256 GB of memory, which is more than 82.8% of motherboards and equal to 16.5% of motherboards.
capacity depends on supported CPU
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

4
GIGABYTE X299 UD4 EX supports 4 memory channels, which is more than 92.8% of motherboards and equal to 6.9% of motherboards.
some CPUs use only 2 channels
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

2,666 MT/s
GIGABYTE X299 UD4 EX supports memory speeds up to 2666 MT/s, which is lower than that of 78.8% of motherboards and equal to that of 4.7% 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

2
GIGABYTE X299 UD4 EX has 2 M.2 sockets, which is more than 30.8% of motherboards and equal to 34.6% 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 3.0 x4/SATA
GIGABYTE X299 UD4 EX offers 2x PCIe 3.0x4/SATA for M.2 slot interfaces, which is slower than that of 67.2% of motherboards and equal to that of 3.8% 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

8
GIGABYTE X299 UD4 EX has 8 SATA 3 connectors, which is more than 85.5% of motherboards and equal to 11.2% 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
GIGABYTE X299 UD4 EX supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% of motherboards.
JBOD excluded from RAID-level set
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

yes
GIGABYTE X299 UD4 EX supports NVMe RAID. 40.3% of motherboards support this feature.
Intel VROC support
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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
GIGABYTE X299 UD4 EX 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
GIGABYTE X299 UD4 EX 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

5
GIGABYTE X299 UD4 EX has 5 PCIe 3.0x16 slots, which is more than 97.4% of motherboards and equal to 2.1% 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

yes
GIGABYTE X299 UD4 EX supports PCIe bifurcation. 39.1% 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

8
GIGABYTE X299 UD4 EX has 8 USB ports (rear I/O), which is more than 40.3% of motherboards and equal to 30.7% 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

16
GIGABYTE X299 UD4 EX has 16 USB ports (including headers), which is more than 61.8% of motherboards and equal to 10.2% 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
GIGABYTE X299 UD4 EX 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

2
GIGABYTE X299 UD4 EX 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

0
GIGABYTE X299 UD4 EX 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
GIGABYTE X299 UD4 EX 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

?
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
GIGABYTE X299 UD4 EX 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
GIGABYTE X299 UD4 EX 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
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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 ALC1220
GIGABYTE X299 UD4 EX uses the Realtek ALC1220 audio codec, which is more advanced than that of 65.1% of motherboards and equal to that of 13% 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
GIGABYTE X299 UD4 EX offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
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

120 dB
GIGABYTE X299 UD4 EX has an audio SNR of 120 dB, which is higher than that of 55% of motherboards and equal to that of 41.5% 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

yes
GIGABYTE X299 UD4 EX supports a headphone amp. 37% of motherboards support this feature.
Smart Headphone Amp.
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

6
GIGABYTE X299 UD4 EX has 6 3.5mm audio jacks, which is more than 86.6% of motherboards and equal to 13.4% 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

?
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
GIGABYTE X299 UD4 EX 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

4
GIGABYTE X299 UD4 EX has 4 fan headers, which is fewer than 64.3% of motherboards and equal to 12.3% 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
GIGABYTE X299 UD4 EX 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

3 A
GIGABYTE X299 UD4 EX supports up to 3 A on the pump header, which is higher than that of 76.7% of motherboards and equal to that of 23.2% of motherboards.
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GIGABYTE X299 UD4 EX vs the average motherboard

  • 2x more maximum memory capacity
    GIGABYTE X299 UD4 EX has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.
    capacity depends on supported CPU
    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

    GIGABYTE X299 UD4 EX has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.256 GB vs 128 GB
  • 4 more memory slots
    GIGABYTE X299 UD4 EX has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.
    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

    GIGABYTE X299 UD4 EX has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.8 vs 4
  • 1 more U.2 sockets
    GIGABYTE X299 UD4 EX has more U.2 sockets than the average motherboard (1 vs 0). The average motherboard has 0 U.2 socket/s.
    optional U.2 adapter excluded
    What it is: The number of U.2 connectors on the motherboard.
    When it matters: When you use enterprise-style U.2 storage devices.

    Importance: LOW

    GIGABYTE X299 UD4 EX has more U.2 sockets than the average motherboard (1 vs 0). The average motherboard has 0 U.2 socket/s.1 vs 0
  • 2 more PCIe x4 slots
    GIGABYTE X299 UD4 EX has more PCIe x4 slots than the average motherboard (2 vs 0). The average motherboard has 0 PCIe x4 slot/s.
    What it is: The number of PCIe x4 slots on the motherboard.
    When it matters: When you need more mid-bandwidth expansion slots.

    Importance: MEDIUM

    GIGABYTE X299 UD4 EX has more PCIe x4 slots than the average motherboard (2 vs 0). The average motherboard has 0 PCIe x4 slot/s.2 vs 0
  • Includes POST code display
    GIGABYTE X299 UD4 EX has a POST code display, while the average motherboard does not. 27.2% of motherboards include a POST code display.
    What it is: Shows whether the board includes a diagnostic POST code readout for boot troubleshooting.
    When it matters: When you troubleshoot boot issues and want clearer error information.

    Importance: LOW

    GIGABYTE X299 UD4 EX has a POST code display, while the average motherboard does not. 27.2% of motherboards include a POST code display.
  • Includes dual BIOS
    GIGABYTE X299 UD4 EX has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
    What it is: Shows whether the motherboard includes two BIOS chips for redundancy or recovery.
    When it matters: When BIOS safety and recovery matter to you.

    Importance: LOW

    GIGABYTE X299 UD4 EX has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • Newer CPU socket
    GIGABYTE X299 UD4 EX has newer CPU socket than the average motherboard (LGA 2,066 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

    GIGABYTE X299 UD4 EX has newer CPU socket than the average motherboard (LGA 2,066 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.LGA 2066 vs LGA 1151
  • 1 more USB 3.2 Gen1 headers
    GIGABYTE X299 UD4 EX has more USB 3.2 Gen1 headers than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen1 header/s.
    two internal headers
    What it is: The number of internal USB 3.2 Gen1 headers for front-panel Type-A ports.
    When it matters: When your case has front USB-A ports to connect.

    Importance: MEDIUM

    Good value: >=1

    GIGABYTE X299 UD4 EX has more USB 3.2 Gen1 headers than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen1 header/s.2 vs 1
  • Includes POST code display
    GIGABYTE X299 UD4 EX has a POST code display, while the average motherboard does not. 27.2% of motherboards include a POST code display.
  • Newer CPU socket
    GIGABYTE X299 UD4 EX has newer CPU socket than the average motherboard (LGA 2,066 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • Includes dual BIOS
    GIGABYTE X299 UD4 EX has dual BIOS, while the average motherboard does not. 22.4% of motherboards include dual BIOS.
  • Broader Windows support
    GIGABYTE X299 UD4 EX has broader Windows support than the average motherboard (Windows 11, Windows 10, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
  • 2x more maximum memory capacity
    GIGABYTE X299 UD4 EX has more maximum memory capacity than the average motherboard (256 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • 4 more memory slots
    GIGABYTE X299 UD4 EX has more memory slots than the average motherboard (8 vs 4). The average motherboard has 4 memory slot/s.
  • More memory channels
    GIGABYTE X299 UD4 EX has more memory channels than the average motherboard (4 vs 2). The average motherboard has 2 memory channel/s.
  • 1 more U.2 sockets
    GIGABYTE X299 UD4 EX has more U.2 sockets than the average motherboard (1 vs 0). The average motherboard has 0 U.2 socket/s.
  • 4 more SATA 3 connectors
    GIGABYTE X299 UD4 EX has more SATA 3 connectors than the average motherboard (8 vs 4). The average motherboard has 4 SATA 3 connectors.
  • 2 more PCIe x4 slots
    GIGABYTE X299 UD4 EX has more PCIe x4 slots than the average motherboard (2 vs 0). The average motherboard has 0 PCIe x4 slot/s.
  • 4 more PCIe 3.0x16 slots
    GIGABYTE X299 UD4 EX has more PCIe 3.0x16 slots than the average motherboard (5 vs 1). The average motherboard has 1 PCIe 3.0x16 slot/s.
  • 1 more USB 3.2 Gen1 headers
    GIGABYTE X299 UD4 EX has more USB 3.2 Gen1 headers than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen1 header/s.
  • 1 more USB 3.2 Gen2 ports
    GIGABYTE X299 UD4 EX 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
    GIGABYTE X299 UD4 EX has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
  • 2 more USB 3.2 Gen1 ports
    GIGABYTE X299 UD4 EX has more USB 3.2 Gen1 ports than the average motherboard (6 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • 1 more total USB-C connections
    GIGABYTE X299 UD4 EX has more total USB-C connections than the average motherboard (2 vs 1). The average motherboard has 1 total USB-C connections.
  • 1 more total USB connections
    GIGABYTE X299 UD4 EX has more total USB connections than the average motherboard (16 vs 15). The average motherboard has 15 total USB connections.
  • Better audio codec
    GIGABYTE X299 UD4 EX has better audio codec than the average motherboard (Realtek ALC1,220 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • 5 dB higher audio SNR
    GIGABYTE X299 UD4 EX has a higher audio SNR than the average motherboard (120 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • 1 more 3.5mm audio jacks
    GIGABYTE X299 UD4 EX has more 3.5mm audio jacks than the average motherboard (6 vs 5). The average motherboard has 5 3.5mm audio jacks.
  • 1 more RGB headers
    GIGABYTE X299 UD4 EX has more RGB headers than the average motherboard (2 vs 1). The average motherboard has 1 RGB header/s.
  • 1 A higher pump header current limit
    GIGABYTE X299 UD4 EX has a higher pump header current than the average motherboard (3 A vs 2 A). The average motherboard provides pump header current of 2 A.

Total
Platform & Features
Memory
Storage
Expansion
Ports & USB
Audio
Power & Cooling
  • More basic motherboard chipset
    GIGABYTE X299 UD4 EX has more basic motherboard chipset than the average motherboard (Intel X299 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • No BIOS flashback support
    GIGABYTE X299 UD4 EX does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • No integrated graphics support
    GIGABYTE X299 UD4 EX does not support integrated graphics, while the average motherboard does. 89.4% of motherboards support integrated graphics.
  • 4 years older release date
    GIGABYTE X299 UD4 EX is older than the average motherboard (2,017 vs 2,021). The average motherboard was released in 2,021.
    June 2017
  • 42% lower maximum RAM speed
    GIGABYTE X299 UD4 EX has a lower maximum RAM speed than the average motherboard (2,666 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • Slower M.2 slot interfaces
    GIGABYTE X299 UD4 EX has slower M.2 slot interfaces than the average motherboard (2x PCIe 3.0x4/SATA 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.
  • 1 fewer PCIe x1 slots
    GIGABYTE X299 UD4 EX has fewer PCIe x1 slots than the average motherboard (0 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • 1 fewer rear USB-C ports
    GIGABYTE X299 UD4 EX has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
  • 1 fewer DisplayPort outputs
    GIGABYTE X299 UD4 EX has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
  • 1 fewer HDMI outputs
    GIGABYTE X299 UD4 EX has fewer HDMI outputs than the average motherboard (0 vs 1). The average motherboard has 1 HDMI outputs.
  • 2 fewer USB 2.0 ports
    GIGABYTE X299 UD4 EX has fewer USB 2.0 ports than the average motherboard (0 vs 2). The average motherboard has 2 USB 2.0 port/s.
  • 60% lower LAN speed
    GIGABYTE X299 UD4 EX 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
    GIGABYTE X299 UD4 EX does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • No optical S/PDIF out
    GIGABYTE X299 UD4 EX does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • No onboard RGB lighting
    GIGABYTE X299 UD4 EX does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • 1 fewer ARGB headers
    GIGABYTE X299 UD4 EX has fewer ARGB headers than the average motherboard (1 vs 2). The average motherboard has 2 ARGB header/s.
  • 1 fewer fan headers
    GIGABYTE X299 UD4 EX has fewer fan headers than the average motherboard (4 vs 5). The average motherboard has 5 fan header/s.
  • More basic motherboard chipset
    GIGABYTE X299 UD4 EX has more basic motherboard chipset than the average motherboard (Intel X299 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

    GIGABYTE X299 UD4 EX has more basic motherboard chipset than the average motherboard (Intel X299 vs Intel B860). The average motherboard uses Intel B860 chipset.Intel X299 vs Intel B860
  • 60% lower LAN speed
    GIGABYTE X299 UD4 EX 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

    GIGABYTE X299 UD4 EX 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
  • Slower M.2 slot interfaces
    GIGABYTE X299 UD4 EX has slower M.2 slot interfaces than the average motherboard (2x PCIe 3.0x4/SATA 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.
    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

    GIGABYTE X299 UD4 EX has slower M.2 slot interfaces than the average motherboard (2x PCIe 3.0x4/SATA 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.2x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • No BIOS flashback support
    GIGABYTE X299 UD4 EX 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

    GIGABYTE X299 UD4 EX does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • 1 fewer rear USB-C ports
    GIGABYTE X299 UD4 EX has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
    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

    GIGABYTE X299 UD4 EX has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.0 vs 1
  • No Wi-Fi antenna included
    GIGABYTE X299 UD4 EX 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

    GIGABYTE X299 UD4 EX does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • No integrated graphics support
    GIGABYTE X299 UD4 EX does not support integrated graphics, while the average motherboard does. 89.4% of motherboards support integrated graphics.
    What it is: Shows whether the motherboard can output video from CPUs that include integrated graphics.
    When it matters: When you want video output without installing a graphics card.

    Importance: MEDIUM

    GIGABYTE X299 UD4 EX does not support integrated graphics, while the average motherboard does. 89.4% of motherboards support integrated graphics.
  • 42% lower maximum RAM speed
    GIGABYTE X299 UD4 EX has a lower maximum RAM speed than the average motherboard (2,666 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
    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

    GIGABYTE X299 UD4 EX has a lower maximum RAM speed than the average motherboard (2,666 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.2666 MT/s vs 4600 MT/s
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Third-party reviews

What customers like about GIGABYTE X299 UD4 EX?

  • High durability components part of the Ultra Durable (UD) line
  • Dual BIOS design provides protection against potential corruption
  • Excellent value for an HEDT platform with aggressive pricing
  • Supports quad-channel DDR4 memory for high-bandwidth tasks
  • Stable VRM performance suitable for heavy multi-core loads
  • Good storage flexibility with dual M.2 slots and multiple RAID support (0, 1, 5, 10)
  • Includes GC-ALPINE RIDGE card for dual Thunderbolt 3 support
  • Clean, professional 'no-frills' aesthetic without excessive RGB

What customers dislike about GIGABYTE X299 UD4 EX?

  • Lacks onboard Wi-Fi (requires a separate PCIe card)
  • Limited to only two full x16 PCIe slots despite having multiple physical slots
  • BIOS interface can feel muddled or unintuitive compared to competitors
  • Some users reported initial stability or 'dead on arrival' (DOA) issues
  • Lack of high-end 'gaming' features like extensive onboard RGB lighting
  • Fan header distribution can make clean cable management difficult

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