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Atx Motherboard Dimensions Cm

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Decoding the ATX Motherboard: A Deep Dive into Dimensions



Ever wondered about the seemingly standardized size of your computer's motherboard? That rectangular marvel, the heart of your digital world, isn't just slapped together haphazardly. Its dimensions, specifically adhering to the ATX (Advanced Technology Extended) standard, are crucial for compatibility and efficient system building. Understanding these dimensions, measured in centimeters (cm), unlocks a deeper appreciation for the intricate engineering that goes into even the most basic computer. This article explores the precise dimensions of ATX motherboards, delving into their significance and practical implications for computer enthusiasts and builders alike.

The Standard ATX Form Factor: A Foundation of Compatibility



The ATX form factor, established by Intel in 1995, dictates the standard dimensions for motherboards. While variations exist (like Micro-ATX and Mini-ITX), the original ATX remains the most common for desktops, particularly those aiming for expandability and high-performance components. The standard ATX motherboard measures approximately 30.5 cm (12 inches) wide and 24.4 cm (9.6 inches) deep. However, this isn't a rigid, unchanging measurement. Slight variations can occur between manufacturers due to differing component placements and design choices. These differences are usually minor, typically within a centimeter or two, and rarely cause compatibility issues.

Understanding the Impact of Dimensions: Case Compatibility



The importance of these seemingly precise measurements becomes apparent when considering the computer case. ATX motherboards are designed to fit into ATX-compatible cases. The case's internal dimensions need to accommodate the motherboard's size, leaving sufficient clearance for the CPU cooler, graphics card, and other components. Purchasing a case without checking its motherboard compatibility – often explicitly stated as "ATX compatible" – could lead to a frustrating incompatibility where the motherboard doesn't physically fit inside. Imagine purchasing a beautiful, high-end motherboard only to discover it's too large for your case!

Beyond the Basics: Exploring Variations



While 30.5 cm x 24.4 cm represents the approximate standard, it’s essential to acknowledge variations.

Micro-ATX (mATX): This smaller form factor is roughly 24.4 cm (9.6 inches) wide and 24.4 cm (9.6 inches) deep, offering a space-saving alternative while retaining many ATX features. It’s perfect for smaller builds and those prioritizing a compact system.

Mini-ITX (mITX): Even smaller than mATX, Mini-ITX motherboards typically measure around 17 cm (6.7 inches) wide and 17 cm (6.7 inches) deep. These are ideal for ultra-compact systems, home theatre PCs (HTPCs), or situations where space is at an absolute premium. However, they usually sacrifice expansion slots and component options.

These variations highlight that the ‘ATX dimension’ is a broad term encompassing a family of sizes, all built upon the original specification. The specific dimensions always need to be verified against the manufacturer's specifications.

Real-World Applications: From Gaming Rigs to Servers



The ATX standard and its variants play vital roles in various computer applications.

High-end Gaming PCs: ATX motherboards are a popular choice for high-end gaming rigs, offering ample space for multiple graphics cards, expansion cards (like sound cards or network interface cards), and large CPU coolers essential for managing the heat generated by powerful processors.

Workstations and Servers: ATX and larger variations are common in workstations and servers, supporting multiple processors, high amounts of RAM, and extensive storage options.

Home Theatre PCs (HTPCs): Micro-ATX and Mini-ITX boards are preferred for HTPCs due to their smaller size and quieter operation, fitting easily into living room setups.


Conclusion: Precision and Practicality



Understanding ATX motherboard dimensions in centimeters is crucial for successful computer building. While the standard size provides a convenient benchmark (approximately 30.5 cm x 24.4 cm), variations like mATX and mITX cater to different needs and form factors. Paying close attention to these dimensions when selecting both the motherboard and the case ensures seamless integration and a functional, optimized system. Remember always to consult the manufacturer’s specifications to ensure compatibility and avoid costly mistakes.

Frequently Asked Questions (FAQs)



1. Are all ATX motherboards exactly the same size? No, while they adhere to the general ATX standard, slight variations in dimensions exist between manufacturers due to design choices. Always check the manufacturer's specifications.

2. What happens if my motherboard is slightly larger than my case? It won't fit. You will need a case with compatible internal dimensions.

3. Can I use a Micro-ATX motherboard in an ATX case? Yes, a smaller motherboard will usually fit within a larger case, but not vice versa.

4. Why are different form factors like mATX and mITX needed? They offer space-saving solutions for smaller builds and specific applications where minimizing size is crucial.

5. Where can I find the exact dimensions of a specific motherboard? The manufacturer's website or the product packaging will provide the precise dimensions and other vital specifications.

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What Are the Different Motherboard Sizes? - WIRED 19 Aug 2024 · Measuring in at 305 x 244 mm (12 x 9.6 inches), this size of motherboard has plenty of room for four or more RAM slots, multiple PCIe cards at several lengths, and two to four M.2...

Different motherboard sizes explained: Chart & Size guide included 20 Aug 2024 · ATX motherboards are basically the go-to standard in the form factor category. They typically measure 30.5 cm x 24.4 cm and can be snugly fit into any mid or full-tower case out there.

Motherboard Form Factors Explained - Guide to Motherboard Sizes As a result, almost all consumer motherboards sold today belong to one of these form factors: Mini-ITX, MicroATX and ATX. To help you compare the difference in motherboard sizes, we have laid out all three standard motherboard form factors side by side in the image below:

What is ATX Motherboard | Understanding Differences Sizes 13 Jan 2025 · What Is ATX Motherboard Size? The standard ATX motherboard size is 12 inches by 9.6 inches (305 mm x 244 mm). This size provides ample space for expansion slots, connectors, and components, making it suitable for a wide range of applications, from gaming rigs to professional workstations. What Does the ATX Mean in the Motherboard?

Motherboard Sizes | Comparison of ATX, E-ATX, Micro-AT and … 17 Sep 2024 · Since the size of ATX motherboards is generally around 12″ x 9.6″, you can easily plan to build a full-tower or mid-tower using such motherboards. Moreover, finding a compatible ATX motherboard is comparatively easier than the other options.

ATX Motherboards - Best Buy ASUS ROG STRIX X870-F GAMING WIFI, AMD X870 ATX motherboard with 16+2+2 power stages, Dynamic OC Switcher, Core Flex, DDR5 support with AEMP, WiFi 7 with ASUS WiFi Q-Antenna, four M.2 slots, PCIe® 5.0 x16 SafeSlots with PCIe Q-Release Slim, two USB4® ports, USB 10Gbps Type-C® with PD 3.0 up to 30W, AI Overclocking, AI Cooling II, AI Networking, …

Motherboard Size Chart - Ultimate Guide by Whatlaptops.com There are many different sizes of motherboards available in the market, and the size of a motherboard has a direct relation to what type of build a motherboard will be best suited for. Here is a detailed Motherboard Size Chart that explains all of your questions.

ATX - Wikipedia Dimensions of a full-size ATX board are 12 × 9.6 in (305 × 244 mm), which allows many ATX chassis to accept microATX boards. The ATX specifications were released by Intel in 1995 and have been revised numerous times since.

Motherboard sizes in 2025: learn how to pick between ATX vs … 10 Feb 2025 · One of the reasons that ATX is such a popular motherboard size in 2025 is due to the size of today’s graphics cards. The cooling solutions on today’s graphics cards can be quite large, and it’ll be much easier to install the card if your case offers a bit of elbow room. That leads many PC builders to select a full-tower or mid-tower ATX ...

Motherboard Sizes - Decoding The Different Types of Motherboards … 15 Feb 2024 · Design and Size: ATX motherboards measure 305mm x 244mm, providing a spacious platform for building high-performance systems. This size allows for better layout, airflow and cooling solutions.

Motherboard Size Guide: EATX vs ATX vs mATX vs ITX - GPCB 21 Oct 2023 · As mentioned, there are four main motherboard sizes for consumers: EATX, ATX, mATX, and ITX. The following is a breakdown of the basic features of each motherboard size and a breakdown of each. Max. Dimensions. To give you an idea of how large (or small) these boards are relative to each other, here are a few typical models to scale.

Motherboard Sizes Explained: Charts & Comparisons Available 6 Sep 2024 · Extended ATX boards (EATX) can support both mainstream desktop and workstation process ors and are slightly bigger than ATX boards. These motherboards measure 305x330mm (12 x 13 inches rather than 12 x 9.6), giving you more PCIe connectors, especially on the workstation variants.

Atx Motherboard Dimensions Cm - globaldatabase.ecpat.org Understanding ATX motherboard dimensions in centimeters is crucial for successful computer building. While the standard size provides a convenient benchmark (approximately 30.5 cm x 24.4 cm), variations like mATX and mITX cater to different needs and form factors.

The Complete Guide to Motherboard Sizes - EATX vs ATX vs Micro ATX … 22 Jan 2025 · Sizing up your motherboard is a big deal. What is an ATX motherboard anyway? Who wins in the battle between E-ATX vs ATX vs mATX vs mITX? Whatever the question, we’ve put together this guide to explain the differences between motherboard sizes.

What are ATX Motherboard Dimensions in ATX Specification? 15 Sep 2023 · Dimensions of ATX motherboard (full-size) are 12 × 9.6 inches. That is, 305 × 244 mm, which enables many ATX cases to accept micro ATX boards.

Everything You'll Ever Need to Know About ATX Motherboards 17 Feb 2023 · Officially, E-ATX is 12 × 13 in (305 × 330 mm), but many manufacturers also refer to motherboards with the following sizes as E-ATX: What is the smallest ATX motherboard? Excluding Mini-ATX, which did not receive widespread adoption, microATX is the smallest ATX motherboard form factor on the market, with dimensions of 6 × 9.6 in (244 × 244 mm).

Types Of Desktop Motherboards- Size, Form Factor 5 Jan 2023 · A Micro-ATX motherboard is bigger than the ITX motherboard and smaller than an ATX motherboard. Generally, it has dimensions as 24.4 x 24.4 CM or 9.6 x 9.6 Inches. But some motherboards may have dimensions as 9.6 x 8.1 inches or 24.4 x 20.6 CM depending upon the slots and ports they come with.

How Big Is An Atx Motherboard? Here’s The Shocking Truth! 20 May 2024 · ATX motherboards are the largest standard motherboard size. An ATX motherboard measures 12 inches by 9.6 inches, and features four RAM slots, several PCI slots, and a variety of other connectors. These motherboards are designed to work with ATX-sized cases, which measure 20 inches by 8.5 inches. How Big Is Atx Motherboard?

Which Motherboard Size To Choose? Micro-ATX Vs Mini-ITX Vs ATX 12 Jul 2023 · Standard-ATX – 30.5 cm x 24.4 cm. Micro-ATX – 24.4 cm x 24.4 cm. Mini-ITX – 17 cm x 17 cm. As you can see from both the physical dimensions and the motherboard size chart there is a solid difference in size between all 3 motherboard form factors. Most noticeable has to be from the standard-ATX to Mini-ITX.

ATX Motherboard Dimensions The ATX motherboard size of 12 in (305 mm) by 9.6 in (244 mm) is regarded as the standard. The EATX (or extended ATX) measures 12 in (305 mm) x 13 in (330 mm) and the EEATX (enhanced extended ATX) is 13.68 in long (347 mm) by 13 in (330 mm).

ATX motherboard dimensions | 3D CAD Model Library | GrabCAD 27 Apr 2020 · The hole in the top right corner is not 2.3cm from the board edge, but from the other holes axis. Thank dude! The Computer-Aided Design ("CAD") files and all associated content posted to this website are created, uploaded, managed and owned by third-party users.

Different Motherboard Types Explained: ATX, Micro ATX, and … 22 Apr 2024 · When someone refers to ATX, it usually indicates the standard version. It has a rectangular design, measuring 305 mm in length and 244 mm in width. The demonstration of GIGABYTE B450 AORUS ELITE below should give you a better insight into its size. While this is the full-sized variant, even a mini-sized version was introduced (284 mm × 208 mm).