Best Computer Cases Under $100 (2026)

We ranked cases under $100 by value score using user ratings, material and cooling features, form factor compatibility, and overall build quality

Top Picks

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    Cooler Master MasterBox Q300L Micro-ATX Tower

    Cooler Master MasterBox Q300L Micro-ATX Tower

    Cooler Master • ★ 4.2/5 • Mid-Range

    Micro-ATX/Mini-ITX case with transparent side panel and adjustable I/O for versatile airflow. Notable for compact size and ease of build, with mixed feedback on airflow and cable management

    • transparent side panel
    • supports 240mm cooling
    • maximum GPU and PSU compatibility
    Check current price on Amazon →
  2. 2
    Lian Li SUP 01-45L Stand-Up Platform Case

    Lian Li SUP 01-45L Stand-Up Platform Case

    Lian Li • ★ 4.1/5 • Mid-Range

    45-liter stand-up PC case with independent chamber cooling. Includes 510mm PCIe 4.0 riser and side RGB lighting; ARGB strips synced with case lighting. Customer notes easy build, good airflow, and ample space for large GPUs

    • independent chamber direct cooling
    • pre-installed 3x 120mm fans
    • 510mm PCIe 4.0 riser with RGB cover
    Check current price on Amazon →
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    LANCOOL 207 Compact ATX Case with ARGB Fans

    LANCOOL 207 Compact ATX Case with ARGB Fans

    Lian Li • ★ 4.1/5 • Mid-Range

    Compact ATX case with airflow-optimized mesh panels and pre-installed ARGB fans. Recessed motherboard tray enhances cooling and supports ATX form factor, plus room for large GPUs

    • ARGB front fans with infinity mirror
    • support for up to 410mm GPUs
    • top-ready for 360mm radiator
    Buy at Amazon →
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    Montech AIR 100 ARGB Micro-ATX PC Case

    Montech AIR 100 ARGB Micro-ATX PC Case

    Montech • ★ 4.1/5 • Mid-Range

    Compact Micro-ATX case with four pre-installed ARGB fans and mesh front for high airflow. Noted for easy maintenance and cable management; users value its space and cooling performance

    • four ARGB fans included
    • anti-dust and high airflow mesh front
    • unique side swivel tempered glass
    Check current price on Amazon →
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    MONTECH XR-B ATX Mid-Tower PC Case

    MONTECH XR-B ATX Mid-Tower PC Case

    Montech • ★ 4.1/5 • Mid-Range

    ATX mid-tower PC case with 3 pre-installed ARGB fans and full-view tempered glass. Supports 360mm radiators and high-end GPUs. Customers note easy cable management and solid build quality

    • 3 pre-installed ARGB fans
    • wood-grain I/O design
    • dual tempered glass panels
    Check current price on Amazon →
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Buying Guide

Form factor and motherboard compatibility

Confirm the case supports your board (micro‑ATX, mini‑ITX, Raspberry Pi) to ensure correct mounting points and I/O alignment

Cooling and airflow

Look for cases with mesh panels, fan mounts or included RGB cooling to maintain thermals for CPUs or single‑board computers

Material and build quality

Aluminum and steel constructions offer better heat dissipation and durability than thin plastics for long‑term use

Expansion and drive options

Check internal bays and expansion slots if you need multiple drives, PCIe cards, or add‑on cooling hardware

Cable management and assembly

Evaluate routing holes, tie‑down points and tool‑less features to simplify assembly and improve airflow