Best Smallest Micro-ATX PC Cases: A Comprehensive Guide

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.
Best Smallest Micro-ATX PC Cases: A Comprehensive Guide
Image source: YouTube

7 Best Smallest Micro-ATX PC Cases

1. Cooler Master MasterBox Q300L

Image source: Hotline
  • 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.

Pros

  • Dust Filters
    Includes magnetic, easy-to-remove dust filters on the front, top, and bottom for maintenance and cleanliness.
  • Good Cooling Potential
    Supports up to 6 fans (2 front, 2 top, 1 rear, 1 bottom).
    Compatible with 240mm radiators for liquid cooling.
  • Modular Design
    Flexible placement of the I/O panel (top, front, or bottom).
    Multiple layout options for customization.

Cons

  • No Pre-Installed Fans
    Some models come with only one rear fan, so additional fans might need to be purchased for better cooling.
  • Airflow Could Be Better
    Mesh panel design is decent but can’t match cases with larger airflow openings or full-mesh fronts.
  • Limited Storage Mounts
    Only two 3.5” drive bays and two 2.5” mounts, which may not suffice for users needing more storage options.
  • Cable Management
    Limited cable management space behind the motherboard tray.
    No rubber grommets for a cleaner cable-routing experience.

2. Fractal Design Core 1100

Image source: Fractal Design
  • 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.

Pros

  • Quiet OperationNoise-dampened design with strategically placed fan mounts to minimize noise levels.
  • Ample GPU Clearance
    Supports GPUs up to 350mm in length, accommodating most mid-range and some high-end graphics cards.
  • Efficient Cooling
    Supports up to 3 fans (1 front, 1 rear, 1 side) for adequate airflow in small builds.
    Comes with a pre-installed 120mm front fan.

Cons

  • Restricted Cooling Options
    Limited space for liquid cooling solutions (no radiator support).
    No top fan mounts for exhaust.
  • Airflow Limitations
    Smaller fan capacity (only up to 3 fans) compared to some other compact cases.
    No mesh front panel, which can restrict airflow.
  • Limited Cable Management
    Minimal space behind the motherboard tray for cable routing.
    No rubber grommets or dedicated cable channels.

3. Thermaltake Core V21

Image source: Thermaltake
  • 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.

Pros

  • Excellent Cooling Support
    Supports up to 11 fans, ensuring superior airflow.
    Radiator support up to 280mm (front, side, or top), making it suitable for liquid cooling.
  • Modular Layout
    Panels are interchangeable, allowing for flexible configuration of airflow and aesthetics.
    Stackable design lets you combine multiple V21 cases for expanded builds.

Cons

  • Limited Storage Options
    Supports up to three 3.5″ drives or three 2.5″ drives, which may not suffice for storage-heavy builds.
  • No PSU Shroud
    Exposed PSU area can make the interior look less clean compared to cases with PSU shrouds.

4. NZXT H510

Image source: Telemart
  • 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.

Pros

  • 
  • Tool-Free Drive Installation
    Tool-less installation for 2.5” drives simplifies the build process.
  • USB-C Front Panel
    Features a USB 3.1 Gen 2 Type-C port for modern peripherals and fast data transfer.

Cons

  • No RGB Lighting
    Unlike some competitors, it doesn’t include built-in RGB lighting (though it’s compatible with RGB components).
  • No PSU Shroud Ventilation
    The PSU shroud lacks ventilation, which can affect cooling efficiency for systems with high-power components.
  • Restricted Airflow
    The front panel design prioritizes aesthetics over airflow, with limited intake vents that can lead to higher internal temperatures.

5. SilverStone Temjin TJ08-E

Image source: SilverStone Technology
  • 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.

Pros

  • PSU and Cable Management Features
    Modular PSU bracket and smart cable routing options for a clean and organized build.
  • Quiet Operation
    Equipped with sound-dampening features and optimized airflow to reduce noise levels.
  • Ample GPU Clearance
    Supports GPUs up to 340mm in length, accommodating most high-end graphics cards.

Cons

  • Restricted Liquid Cooling Options
    Limited support for radiators; designed more for air cooling than custom water loops.
  • No RGB Features
    Focused on functionality and aesthetics rather than flashy lighting, which may not appeal to RGB enthusiasts.
  • Front I/O Panel Placement
    Positioned at the top, which may not be ideal for every setup or user preference.
  • Limited Fan Support
    Designed primarily for the included 180mm fan, with limited options for additional fans (only one rear 120mm mount).

6. Corsair 275R

Image source: Corsair
  • 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.

Pros

  • Storage Flexibility
    Supports two 3.5” drives and up to four 2.5” drives, providing decent storage options.
  • Decent Cooling Support
    Supports up to six 120mm fans or three 140mm fans.
    Radiator support for up to 360mm in the front and 240mm on the roof, making it suitable for liquid cooling.

Cons

  • Limited Top Radiator Clearance
    Space for top-mounted radiators is tight, which could lead to compatibility issues with thicker radiators and fans.
  • No Pre-Installed RGB
    Does not include built-in RGB lighting, which may be a downside for users seeking an RGB-ready case.
  • Limited Front I/O
    The front I/O panel is basic, with only two USB 3.0 ports, headphone/microphone jacks, and no USB-C support.
  • Airflow Limitations (Solid Panel Version)
    The solid front panel version restricts airflow, which can lead to higher internal temperatures compared to the mesh variant.

7. Phanteks Eclipse P360A

Image source: e-katalog
  • 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.

Pros

  • Tool-Free Drive Installation
    Tool-less mounts for 3.5” and 2.5” drives simplify the installation process.
  • Cable Management Features
    Includes cable routing channels, velcro straps, and a PSU shroud for a clean build.
  • Good Cooling Support
    Supports up to 5 fans (3 front, 1 rear, 1 top).
    Radiator support for up to 280mm in the front and 240mm on the top.
  • Integrated RGB Lighting
    Built-in D-RGB controller and pre-installed RGB fans allow for customization and a vibrant look out of the box.
  • Excellent Airflow
    Mesh front panel with high airflow design ensures effective cooling.
    Includes two pre-installed 120mm D-RGB fans for both cooling and aesthetics.

Cons

  • No Front USB-C Port
    The front I/O panel lacks a USB Type-C port, which might be a drawback for users with modern peripherals.
  • Restricted Fan Configuration
    The compact size means fewer overall fan mounts compared to larger mid-tower cases.
  • Limited Top Radiator Support
    The top panel can only fit up to a 240mm radiator, which might limit cooling options for some users.

Comparison table of Best Smallest Micro-ATX PC Cases

CaseDimensions (H x W x D)WeightCooling OptionsGPU ClearanceSpecial FeaturesPrice Range
Cooler Master Q300L15.9″ x 9.1″ x 18.5″3.7 kgUp to 6 fans; supports liquid coolingUp to 360mmModular design, dust filters$$
Fractal Design Core 110013.9″ x 8.1″ x 14.4″4.1 kgUp to 4 fansUp to 350mmMinimalist design, compact build$
Thermaltake Core V2111.8″ x 13.3″ x 13.2″6.5 kgMultiple fan and radiator mountsUp to 350mm (depending on layout)Cube layout, modular motherboard orientation$$
NZXT H51014.4″ x 8.3″ x 18.1″6.6 kgSupports 3 fans; liquid coolingUp to 381mmTempered glass, cable management$$$
SilverStone Temjin TJ08-E13.2″ x 8.3″ x 14.5″5.3 kg1 x 180mm fan included, liquid cooling supportedUp to 340mmPremium build quality, quiet operation$$$$
Corsair 275R17.3″ x 8.1″ x 16.2″6.3 kgUp to 6 fans; supports liquid coolingUp to 370mmSleek design, mesh front panel$$$
Phanteks Eclipse P360A16.1″ x 8.2″ x 16.1″4.7 kgUp to 5 fans; liquid coolingUp to 400mmMesh 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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