Choosing the right motherboard form factor is crucial when building a PC. EATX and ATX are two popular options. Each has unique strengths, so understanding their differences is essential.
ATX motherboards measure 12 x 9.6 inches and are the most common. They offer a good balance of features and fit most computer cases.
EATX boards are larger at 12 x 13 inches. They provide more space for extra components and features.
Size, functionality, and case compatibility are key factors to consider. EATX boards offer more PCIe slots and RAM capacity, ideal for high-end builds.
ATX boards are more versatile and fit a wider range of cases. They’re perfect for most users’ needs.
Key Takeaways
- EATX motherboards are larger than ATX, offering more space for components
- ATX boards are more common and fit in a wider range of cases
- EATX supports more PCIe slots and RAM capacity
- ATX is suitable for most users, while EATX caters to high-end builds
- Consider your specific needs and case compatibility when choosing
Understanding Motherboard Form Factors
Motherboard form factors shape computer design. They determine the size and layout of the motherboard. ATX and EATX are two popular form factors worth exploring.
What is ATX?
ATX stands for Advanced Technology Extended. It’s a standard motherboard form factor introduced by Intel in 1995. ATX measures 12 x 9.6 inches (305 x 244 mm).
This design offers enough space for components. It fits well with most computer cases.
What is EATX?
EATX is a larger version of ATX. It measures 12 x 13 inches (305 x 330 mm). This extra space allows for more features.
EATX supports more expansion slots and better cooling. It can also accommodate dual CPU sockets.
History and Development
Motherboard layouts have evolved with technology and user needs. ATX became the standard for most computers. It offered integrated I/O ports and better upgradability.
EATX emerged for high-performance demands. It caters to gaming and professional applications.
| Feature | ATX | EATX |
|---|---|---|
| Size | 12 x 9.6 inches | 12 x 13 inches |
| PCI-E x16 Slots | 3-4 | 4-8 |
| RAM Slots | 4 | 6-8 |
| Max Memory | 64 GB | 128 GB |
| CPU Sockets | 1 | 1-2 |
ATX and EATX keep evolving to meet modern computing needs. They support various chipsets and technologies. Your choice depends on your specific requirements.
EATX offers extra features for high-performance systems. Consider your needs when choosing between ATX and EATX.
Size Comparison: EATX vs ATX
EATX and ATX are two popular motherboard sizes. ATX boards measure 12 x 9.6 inches, fitting most mid-tower cases. EATX boards are larger at 12 x 13 inches.
EATX boards need spacious cases or full towers. They offer more room for extra components and improved layout.
The size difference affects more than case compatibility. EATX boards provide space for additional features.
- Up to 8 RAM slots
- 4 to 8 PCIe slots
- Dual CPU sockets in some models
ATX motherboards are smaller but still feature-rich. They cater to most users’ needs.
- 2 to 8 RAM slots
- 4 to 7 PCIe slots
- 4 to 12 SATA ports
Your choice depends on specific needs. EATX suits high-performance workstations, servers, and enthusiast-level gaming builds.
ATX is more compact and versatile. It’s ideal for most standard desktop builds.
Functionality and Features
Motherboard size impacts your computer’s capabilities. ATX and EATX boards differ in key areas. Let’s explore their features.
PCIe Expansion Slots
ATX boards typically have 3-4 PCIe x16 slots. EATX boards offer 4-8 slots, providing more room for add-ons. This makes EATX ideal for high-end gaming or extensive customization.
RAM Capacity
ATX boards usually come with 4 RAM slots. EATX boards often feature 6-8 slots, supporting up to 256GB of RAM or more. This benefits users working with large data sets or multiple programs.
SATA Ports and Storage Options
EATX boards excel in storage capabilities. They offer more SATA ports than ATX boards, allowing for additional hard drives or SSDs. EATX boards also typically include more USB ports and improved built-in sound systems.
Both ATX and EATX can support older technology. EATX often provides more space for these extras. EATX offers more features but comes at a higher price.
EATX requires a larger case. ATX remains an excellent choice for most users. It balances features and cost effectively.
Cooling and Heat Dissipation
Motherboard layout design greatly impacts system performance through cooling and heat dissipation. EATX and ATX motherboards manage heat differently due to their size. Their thermal management approaches vary significantly.
EATX boards excel at heat dissipation because of their larger surface area. This extra space improves component spacing and airflow. High-performance systems benefit from more efficient cooling with EATX.
ATX motherboards provide sufficient cooling for most setups despite being smaller. Both form factors need careful airflow planning. Following pc building guidelines ensures optimal thermal performance in either case.
| Form Factor | Case Fan Support | 5.25″ Drive Bays | 3.5″ Drive Bays | 2.5″ Drive Bays |
|---|---|---|---|---|
| ATX | 3-9 | 2-5 | 6-8 | 0-10 |
| EATX | 5-10 | 3-6 | 6-13 | 0-11 |
EATX-compatible cases offer more room for CPU cooler radiators. This extra space allows for larger radiators, improving cooling efficiency. Larger radiators can also help reduce noise levels in your system.
The ATX standard, introduced by Intel in 1995, keeps evolving. It continues to meet modern cooling demands for various computer builds.
“A larger radiator surface area allows for more efficient heat transfer, using more, slower-spinning fans that generate less noise.”
Both ATX and EATX motherboards provide effective cooling solutions. However, EATX offers more flexibility for high-performance systems. It’s better suited for setups with greater cooling needs.
Power Supply Considerations
Power supply choices are vital when selecting EATX or ATX motherboards. Understanding power connections and ATX specs helps build stable systems. Efficient power distribution is key for optimal performance.
ATX Power Connections
ATX boards use a 24-pin main power connector and an 8-pin CPU power connector. These ensure proper electricity distribution to components. Intel introduced ATX specs in 1995, setting the standard for modern computers.
EATX Power Requirements
EATX boards often need more power due to their larger size. They may require dual 8-pin CPU power or extra PCIe power. This increased demand means EATX systems typically need higher wattage power supplies.
| Feature | ATX | EATX |
|---|---|---|
| Main Power Connector | 24-pin | 24-pin |
| CPU Power Connector | 8-pin | Dual 8-pin |
| Typical Wattage | 500-750W | 750-1000W+ |
| PCIe Power | Standard | Additional |
Picking the right power supply is crucial for system stability. Choose a power supply that exceeds your system’s needs. This ensures smooth operation and extends component life.
Case Compatibility and Space Requirements
Computer case compatibility is key when building a PC. Different motherboard sizes need specific case dimensions. ATX motherboards fit well in mid-tower and full-tower cases.
EATX boards require more space. They need full-tower or super-tower designs for proper fitting.
Let’s look at some motherboard dimensions:
| Motherboard Type | Length (inches) | Width (inches) | Max Expansion Slots |
|---|---|---|---|
| ATX | 12 | 6.7 – 9.6 | 7 |
| E-ATX | 12 | 13 | 7 |
| Micro-ATX | 9.6 | 6.7 – 9.6 | 4 |
| Mini-ITX | 6.7 | 6.7 | 1 |
PC building isn’t just about motherboard fit. Consider GPU clearance, radiator support, and cable management options. Some cases support larger XL-ATX boards.
The Antec Eleven Hundred is a good value at $93. It can fit larger motherboards comfortably.
Some cases might fit an E-ATX board but limit access. Certain Corsair cases can make it hard to reach ports. Always check case specs and reviews before buying.
Performance Impact: Does Size Matter?
Motherboard size can affect performance in PC building. EATX and ATX motherboards differ in more than just dimensions. They impact signal travel distance and overclocking potential.
Signal Travel Distance
EATX motherboards have larger dimensions, potentially leading to longer signal paths. This might affect high-speed applications like PCIe 5.0. However, modern designs use advanced techniques to ensure optimal performance regardless of size.
Overclocking Potential
EATX boards excel in overclocking due to their larger size. They allow for robust power delivery systems and improved VRM designs. This extra space enables better component isolation and thermal management.
These features contribute to increased stability during overclocking sessions. EATX boards offer advantages for enthusiasts seeking maximum performance.
| Feature | ATX | EATX |
|---|---|---|
| Size (mm) | 305 x 244 | 305 x 330 |
| CPU Sockets | 1 | 1-2 |
| RAM Slots | 4 | Up to 8 |
| PCI Slots | Up to 7 | Up to 8 |
| Overclocking Potential | Good | Excellent |
Both ATX and EATX motherboards offer excellent capabilities. Your choice depends on your specific needs and setup. Consider case compatibility and budget when making your decision.
Price Comparison and Value Proposition
ATX motherboards offer diverse options at various price points. They start around $125, with premium models reaching $300 or more. EATX motherboards are generally more expensive, starting at $300.
High-end EATX models can exceed $500. These larger boards often include extra features. Let’s examine some specific examples to show the price difference:
| Motherboard | Form Factor | Price Range |
|---|---|---|
| ASRock B650M-HDV/M.2 | ATX | $125 – $150 |
| ASRock Z790 Steel Legend | ATX | $250 – $300 |
| Gigabyte B650E Aorus Master | EATX | $350 – $400 |
| ASRock X670E Taichi | EATX | $450 – $500 |
Your choice between ATX and EATX depends on your budget and needs. ATX boards suit most users well. EATX boards target enthusiasts seeking extra expansion options or special features.
Conclusion
Your needs and pc building guidelines determine the choice between EATX and ATX motherboards. ATX boards (12 x 9.6 inches) suit most users. They offer up to 7 expansion slots, balancing space and options.
EATX motherboards (12 x 13 inches) provide more room for components. They’re perfect for high-end gaming rigs and workstations. These boards often have 8+ expansion slots and better power delivery.
Budget-minded builders may prefer ATX boards. They’re cheaper and fit most cases. EATX caters to power users seeking maximum expandability.
Your choice should match your upgrade plans and current needs. Both types serve different PC builders. Ensure your pick fits your requirements and future goals.
FAQ
What is the main difference between ATX and EATX motherboards?
ATX and EATX motherboards differ mainly in size. ATX measures 12 x 9.6 inches, while EATX is larger at 12 x 13 inches. EATX provides more space for extra components and features.
Which form factor is suitable for most PC builds?
ATX is the most common form factor for most mid-tower cases and PC builds. EATX is typically used for high-end workstations, servers, or gaming rigs.
How do ATX and EATX differ in terms of expansion slots and RAM capacity?
EATX motherboards offer more PCIe x16 slots (4-8) than ATX boards (3-4 slots). EATX also supports more RAM slots, usually 6-8, allowing for higher memory capacities.
What are the power supply considerations for EATX motherboards?
EATX motherboards may need extra power connections, like dual 8-pin CPU connectors. They often require higher wattage power supplies due to more components.
Are there any cooling advantages to using an EATX motherboard?
EATX motherboards offer better heat dissipation due to their larger surface area. This can lead to more efficient cooling, especially for high-performance systems.
What are the potential performance implications of using an EATX motherboard?
EATX boards can offer better overclocking potential due to improved power delivery systems. They may have slight signal travel issues, but modern designs minimize this problem.
Are EATX motherboards more expensive than ATX boards?
Yes, EATX motherboards are generally pricier, often exceeding 0. ATX boards offer a wider range of options, from budget-friendly to high-end models.
