Micro-Atx or E-Atx Motherboards? Compared by Specs
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Choosing between a Micro-ATX vs E-ATX motherboard depends on your case size and CPU needs. Both ASUS models offer robust connectivity and reliable performance for their respective platforms. The main difference lies in physical dimensions and supported processor generations. One uses a compact layout with modern DDR5 memory, while the other provides a larger footprint for high-end Threadripper CPUs and DDR4 support. You should select based on your specific socket requirements and available chassis space.
Key differences
| Aspect | ASUS Prime Micro-ATX DDR5 Motherboard | ASUS Prime Threadripper TR4 E-ATX Motherboard |
|---|---|---|
| Form Factor | Micro-ATX | E-ATX |
| CPU Socket | LGA 1700 | TR4 |
| Memory Type | DDR5 | DDR4 |
| Chipset | B760 | X399 |
| PCIe Version | PCIe 4.0 | not listed |
| Wi-Fi | Wi-Fi 6 | not listed |
Which one should you choose?
Choose ASUS Prime Micro-ATX DDR5 Motherboard if
- You need a compact board for a smaller case.
- You want to use 12th or 13th Gen Intel processors.
- You prefer DDR5 memory for higher bandwidth.
Choose ASUS Prime Threadripper TR4 E-ATX Motherboard if
- You require a large board for Threadripper builds.
- You need extensive expansion options for HEDT systems.
- You are building with DDR4 memory modules.
Verdict: The Micro-ATX option suits most users seeking modern Intel performance in a space-saving design. The E-ATX board is necessary only for specialized Threadripper workstations requiring maximum expansion and legacy DDR4 support. Choose based on your CPU platform and case constraints.
Micro-ATX Versus E-ATX Specs
form factor size
Physical dimensions define how much space a motherboard occupies inside your computer case. Product A is a Micro-ATX board measuring 10.4 inches by 10.8 inches. This compact layout fits into smaller cases and leaves more room for airflow and cable management. Product B is an Extended ATX board measuring 10.1 inches by 12 inches. The larger surface area allows for more components and expansion slots. If you have a mid-tower case, the Micro-ATX option is the safer choice. The E-ATX model requires a larger chassis to fit properly. You must check your case specifications before deciding on the footprint.
cpu socket
The processor socket determines which CPUs you can install. Product A features an LGA 1700 socket, which supports Intel 12th and 13th generation Core processors. This platform is current and offers strong performance for modern gaming and productivity tasks. Product B uses the TR4 socket, designed for AMD Ryzen Threadripper processors. This is a High-End Desktop platform aimed at professional workloads. The TR4 socket supports up to 128GB of memory. You cannot swap CPUs between these two sockets. Your choice depends entirely on whether you need Intel’s mainstream efficiency or AMD’s extreme multi-core capabilities for heavy rendering.
memory type
Memory technology affects speed and capacity limits. Product A supports DDR5 RAM, which offers higher bandwidth and efficiency than previous generations. It supports up to 64GB of DDR5 modules. This is ideal for modern applications that benefit from fast data access. Product B supports DDR4 memory, which is slightly older technology. However, it supports up to 128GB of DDR4 RAM. This higher capacity is beneficial for massive datasets or virtualization. DDR5 is faster, but DDR4 allows for more total memory. You should choose based on whether you prioritize speed or maximum capacity for your specific software needs.
pcie version
PCIe version impacts how fast your graphics card and storage devices communicate with the CPU. Product A uses PCIe 4.0, which doubles the bandwidth of PCIe 3.0. This ensures that modern NVMe drives and graphics cards run at their full potential. Product B does not list its PCIe version in the provided data. We cannot verify if it supports PCIe 4.0 or 5.0. However, the X399 chipset is older, so it likely uses PCIe 3.0 or 4.0. If you need the latest PCIe 4.0 speeds for fast storage, Product A is the clear choice. The lack of data for Product B makes it harder to compare directly.
connectivity features
Built-in wireless and wired connectivity vary between the two boards. Product A includes Wi-Fi 6 for faster wireless connections and a 2.5 Gb Ethernet port for high-speed wired networking. It also features DisplayPort for direct monitor connections. Product B does not list Wi-Fi or Ethernet speeds in its key specs. It does mention USB 3.1 Gen2 ports and U.2 drive support, which is rare for consumer boards. The U.2 support offers high-speed storage options. However, for standard network and wireless needs, Product A provides more modern and useful features for typical users.
Which motherboard fits your build needs?
Users with compact cases and modern Intel CPUs
Choose this Micro-ATX board if space is tight. It measures 10.4 by 10.8 inches, fitting smaller cases easily. The LGA 1700 socket supports 12th and 13th Gen Intel processors. You get DDR5 memory support up to 64GB and PCIe 4.0 speeds. Integrated Wi-Fi 6 and 2.5 Gb LAN keep you connected without needing extra cards.
Threadripper owners needing maximum memory capacity
This E-ATX motherboard is built for AMD Threadripper TR4 processors. It supports up to 128GB of DDR4 memory, which is double the capacity of the other option. The X399 chipset provides a robust platform for high-end computing tasks. You get dual NVMe M.2 slots and a U.2 port for fast storage options essential for heavy workloads.
Builders prioritizing large expansion and GPU support
Select this E-ATX model if you need extensive expansion slots. The larger physical footprint allows for more PCIe slots and better airflow around heavy graphics cards. It features Safe Slot technology for secure GPU installation. The board includes USB 3.1 Gen2 ports and AURA Sync RGB headers for customization, making it ideal for expansive desktop setups.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | ASUS Prime Micro-ATX DDR5 Motherboard | Compact Intel 12th/13th Gen builds with wireless needs | Check price of ASUS Prime Micro-ATX DDR5 Motherboard on Amazon |
| 2 | ASUS Prime Threadripper TR4 E-ATX Motherboard | Threadripper workstation builds | Check price of ASUS Prime Threadripper TR4 E-ATX Motherboard on Amazon |
The products compared
ASUS Prime Micro-ATX DDR5 Motherboard
Best for: Compact Intel 12th/13th Gen builds with wireless needs
- Form Factor
- Micro-ATX (what this guide is about)
- CPU Socket
- LGA 1700
- Memory Type
- DDR5
- PCIe Version
- PCIe 4.0
- M.2 Slots
- 2
- Wi-Fi Standard
- Wi-Fi 6
View on Amazon: ASUS Prime Micro-ATX DDR5 Motherboard Affiliate link
The ASUS Prime B760M-A AX is a Micro-ATX motherboard built for Intel 12th and 13th Gen processors via the LGA 1700 socket. It supports DDR5 memory up to 64GB and features PCIe 4.0 lanes. You get integrated Wi-Fi 6, 2.5 Gb Ethernet, and two M.2 slots for storage. This board offers a compact form factor with modern connectivity options for standard desktop builds.
Pros
- Supports Intel 12th and 13th Gen CPUs on LGA 1700 socket
- Includes Wi-Fi 6 and 2.5 Gb Ethernet for fast networking
- Features two M.2 slots and PCIe 4.0 support
- Compatible with DDR5 RAM up to 64GB capacity
Cons
- Micro-ATX form factor offers less expansion space than E-ATX boards
- Limited to two M.2 slots for storage drives
- No mention of USB 3.2 Gen 2x2 or Thunderbolt support
Good fit if
- You need a compact build for an Intel 12th or 13th Gen processor
- You want integrated Wi-Fi 6 and 2.5 Gb Ethernet without add-on cards
- You prefer DDR5 memory for improved multitasking performance
Skip if
- You require the maximum expansion slots available in an E-ATX chassis
- You are building with AMD Threadripper or high-end HEDT platforms
- You need more than two M.2 slots for your storage setup
Verdict: ASUS Prime B760M-A AX Micro-ATX is a solid choice for users seeking a compact, modern Intel build with integrated wireless networking and DDR5 support.
ASUS Prime Threadripper TR4 E-ATX Motherboard
Best for: Threadripper workstation builds
- Form Factor
- E-ATX (what this guide is about)
- CPU Socket
- TR4
- Chipset
- X399
- Memory Type
- DDR4
- Series
- Ryzen Threadripper
- Dimensions
- 12 × 1 × 10.1 inches
View on Amazon: ASUS Prime Threadripper TR4 E-ATX Motherboard Affiliate link
This Extended ATX motherboard supports AMD Threadripper TR4 processors. It handles up to 128GB of DDR4 memory. You get dual NVMe M.2 slots and a front U.2 port. The board includes USB 3.1 Gen2 connectivity. It features AURA Sync RGB lighting. This HEDT platform suits users building high-end workstation systems requiring extensive memory and storage options.
Pros
- Supports up to 128GB of DDR4 memory
- Includes dual NVMe M.2 drives and front U.2 port
- Features USB 3.1 Gen2 connectivity
- Provides AURA Sync RGB lighting and headers
Cons
- Large Extended ATX size limits case compatibility
- Heavy 4.5-pound build requires sturdy mounting
- Uses older TR4 socket with limited future upgrade path
Good fit if
- You need a platform for AMD Threadripper CPUs
- You require extensive memory capacity for professional workloads
- You have a large case that fits Extended ATX boards
Skip if
- You are building a standard gaming PC with consumer CPUs
- You have a small form factor case
- You want the latest AM5 socket for future upgrades
Verdict: ASUS PRIME X399-A E-ATX is a specialized HEDT board for Threadripper users. It fits professionals needing high memory capacity and specific storage interfaces in large cases.
Specifications side by side
| Spec | ASUS Prime Micro-ATX DDR5 Motherboard | ASUS Prime Threadripper TR4 E-ATX Motherboard |
|---|---|---|
| CPU Socket | LGA 1700 | TR4 |
| Chipset | not stated | X399 |
| Form Factor | microATX | Extended ATX |
| Memory Type | DDR5 | DDR4 |
| PCIe Version | PCIe 4.0 | not stated |
| M.2 Slots | 2 | not stated |
| Wi-Fi Standard | Wi-Fi 6 | not stated |
| Ethernet Speed | 2.5 Gb | not stated |
| Wi-Fi | Wi-Fi 6 | not stated |
| Series | not stated | Ryzen Threadripper |
| Dimensions | 10.8 × 10.4 × 2.58 inches | 12 × 1 × 10.1 inches |
| Weight | 3.11 pounds | 4.5 pounds |
| Size | PRIME B760M-A AX | Extended ATX |
| Color | BLACK | not stated |
| Model | PRIME B760M-A AX | PRIME X399-A |
Frequently asked questions
What is the physical size difference between Micro-ATX and E-ATX motherboards?
Micro-ATX boards are significantly smaller than E-ATX models. The ASUS Prime Micro-ATX measures 10.4 inches by 10.8 inches. The E-ATX option measures 10.1 inches by 12 inches. This extra length on the E-ATX board requires a larger case. You should check your case dimensions before choosing.
Which motherboard supports the latest Intel processors?
The ASUS Prime Micro-ATX supports 12th and 13th Gen Intel CPUs. It uses the LGA 1700 socket for these modern processors. The E-ATX board targets Threadripper workstations instead. If you need current Intel performance, the Micro-ATX option is the correct choice for your build.
Do these boards include wireless networking capabilities?
The ASUS Prime Micro-ATX includes integrated Wi-Fi 6. This allows you to connect without cables for faster wireless speeds. The listed E-ATX specifications do not mention built-in wireless features. You may need a separate adapter if you choose the larger E-ATX board.
What type of RAM do these motherboards use?
The Micro-ATX board uses DDR5 memory for higher bandwidth. The E-ATX board supports DDR4 memory types. DDR5 is newer and generally faster than DDR4. You must buy the correct RAM type that matches your chosen motherboard's specifications.
Is there a difference in wired network speed?
The Micro-ATX model features a 2.5GbE Ethernet port. This provides faster wired connections than standard Gigabit ports. The E-ATX board data does not specify its Ethernet speed. You should verify the network capabilities if high-speed wired internet is a priority.
Which board is better for a compact PC case?
The Micro-ATX board is better for small cases. It measures 10.4 inches by 10.8 inches, fitting tighter spaces. The E-ATX board is longer at 12 inches. It requires a larger case with more internal room. Choose Micro-ATX if space is limited.
Can I use the E-ATX board for general gaming?
The E-ATX board is designed for Threadripper workstations. It targets professionals needing high memory capacity. It is not optimized for standard gaming CPUs. The Micro-ATX board supports mainstream Intel processors. It is a more suitable choice for typical gaming builds.