Best Smallest Micro-ATX PC Cases
Why do we need Micro-ATX PC Cases?
Micro-ATX PC cases are designed to support Micro-ATX motherboards, which are smaller than standard ATX boards but larger than Mini-ITX boards.
Compact Size
- Micro-ATX cases are smaller than traditional ATX cases, making them ideal for environments with limited space, like small desks, dorm rooms, or home entertainment setups.
Balanced Size and Expandability
- A Micro-ATX motherboard and case offer a balance between expandability and compactness. They typically have:
- 2–4 RAM slots
- Fewer PCIe slots than ATX (but still enough for most users)
- Adequate storage options
- This makes them suitable for most users who don’t need the full expansion of a standard ATX system.
Portability
- Smaller cases are easier to transport, making them ideal for LAN parties, moving frequently, or creating a portable workstation.
Cost-Effectiveness
- Micro-ATX motherboards and cases are generally cheaper than ATX counterparts while offering most of the features a typical user needs. This makes them appealing for budget-conscious builders.
Aesthetic and Minimalism
- Compact cases look sleek and modern. They’re great for those who want a minimalist or clutter-free PC setup.
Energy Efficiency
- Smaller builds typically use components that are more power-efficient and generate less heat, reducing energy consumption and the need for excessive cooling.
Use Cases
- Home PCs: Ideal for general use like browsing, streaming, and light gaming.
- Entry-Level Gaming Builds: Great for those who want a gaming rig without needing a larger setup.
- Media Centers/HTPCs: Perfect for living rooms or small setups to stream content or act as a home theater PC.
- Office PCs: Compact yet functional, they save space on office desks.

7 Best Smallest Micro-ATX PC Cases
1. Cooler Master MasterBox Q300L

- Dimensions: 15.9 x 9.1 x 18.5 inches
- Features: Modular design, ample airflow, and versatile layout options. The case is very compact while still providing a good amount of space for components. It offers great cable management options, and it’s easy to build in.
2. Fractal Design Core 1100

- Dimensions: 13.9 x 8.1 x 14.4 inches
- Features: Clean and minimalistic design. It has good cooling options, with support for up to 4 fans and the ability to install large graphics cards. Ideal for those who want a small form factor with decent expandability.
3. Thermaltake Core V21

- Dimensions: 11.8 x 13.3 x 13.2 inches
- Features: Cube-style layout that allows you to orient the motherboard in any direction, maximizing cooling performance. Good airflow and flexibility in terms of component configuration. It’s compact yet highly functional.
4. NZXT H510

- Dimensions: 14.4 x 8.3 x 18.1 inches
- Features: Simple, clean design with tempered glass side panel. It offers good cable management options, efficient airflow, and a solid build quality. The H510 is slightly larger than some others on this list but still compact.
5. SilverStone Temjin TJ08-E

- Dimensions: 13.2 x 8.3 x 14.5 inches
- Features: Premium compact build with a focus on airflow and noise reduction. It has excellent cable management and supports a variety of cooling options, including water cooling. It’s ideal for enthusiasts looking for a high-quality build in a small footprint.
6. Corsair 275R

- Dimensions: 17.3 x 8.1 x 16.2 inches
- Features: Minimalist design with a front mesh panel for better airflow. It offers a great balance of size and expandability with enough space for GPU and cooling options. A good choice for people looking for something sleek but not too small.
7. Phanteks Eclipse P360A

- Dimensions: 16.1 x 8.2 x 16.1 inches
- Features: Excellent airflow design, including mesh panels and pre-installed fans. It’s a compact case but still gives you room to work with while providing great cooling performance.
Comparison table of Best Smallest Micro-ATX PC Cases
Case | Dimensions (H x W x D) | Weight | Cooling Options | GPU Clearance | Special Features | Price Range |
---|---|---|---|---|---|---|
Cooler Master Q300L | 15.9″ x 9.1″ x 18.5″ | 3.7 kg | Up to 6 fans; supports liquid cooling | Up to 360mm | Modular design, dust filters | $$ |
Fractal Design Core 1100 | 13.9″ x 8.1″ x 14.4″ | 4.1 kg | Up to 4 fans | Up to 350mm | Minimalist design, compact build | $ |
Thermaltake Core V21 | 11.8″ x 13.3″ x 13.2″ | 6.5 kg | Multiple fan and radiator mounts | Up to 350mm (depending on layout) | Cube layout, modular motherboard orientation | $$ |
NZXT H510 | 14.4″ x 8.3″ x 18.1″ | 6.6 kg | Supports 3 fans; liquid cooling | Up to 381mm | Tempered glass, cable management | $$$ |
SilverStone Temjin TJ08-E | 13.2″ x 8.3″ x 14.5″ | 5.3 kg | 1 x 180mm fan included, liquid cooling supported | Up to 340mm | Premium build quality, quiet operation | $$$$ |
Corsair 275R | 17.3″ x 8.1″ x 16.2″ | 6.3 kg | Up to 6 fans; supports liquid cooling | Up to 370mm | Sleek design, mesh front panel | $$$ |
Phanteks Eclipse P360A | 16.1″ x 8.2″ x 16.1″ | 4.7 kg | Up to 5 fans; liquid cooling | Up to 400mm | Mesh front for airflow, RGB support | $$$ |
Key:
- Cooling Options: Refers to the number of fans supported and compatibility with liquid cooling systems.
- GPU Clearance: Maximum supported length for graphics cards.
- Price Range:
- $: Budget (<$60)
- $$: Mid-range ($60–$100)
- $$$: High-end ($100–$150)
- $$$$: Premium (>$150)
FAQ
How to Choose the Right PC Case?
Airflow and Cooling Options
Look for cases with mesh panels or multiple fan mounts for good airflow.
Check compatibility with liquid cooling solutions (radiator sizes and placement).
Pre-installed fans can save time and money.
Compatibility
Motherboard: Ensure the case supports your motherboard size.
GPU Clearance: Check the maximum GPU length your case can accommodate.
CPU Cooler Height: Make sure your cooler fits within the case’s height restrictions.
Power Supply (PSU): Verify that the case supports your PSU size (ATX, SFX, etc.).
Drive Bays: Ensure enough bays for SSDs/HDDs.
Use Case
Gaming: Prioritize cooling and space for large GPUs.
Workstation: Focus on expandability and storage options.
HTPC (Home Theater PC): Choose a compact case that blends with your home setup.
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Hi, this is Masab, the Founder of PC Building Lab. I’m a PC enthusiast who loves to share the prior knowledge and experience that I have with computers. Well, troubleshooting computers is in my DNA, what else I could say….