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Cooler Master QUBE 540 ATX Mid-Tower PC Case, High Airflow, Tempered Glass | 415mm Graphics Cards Support, 360mm AIO Support, ATX Motherboards, Highly Customizable Movable, I/O Panel, PSU Multi-Mount

Cooler Master QUBE 540 ATX Mid-Tower PC Case

Bottom line: The Cooler Master QUBE 540 ATX Mid-Tower PC Case ($66.60 on Amazon as of 2026-10-06): Up to 415mm GPU clearance (without front fan) fits RTX 5090-class cards; main trade-off: only one pre-installed 120mm SickleFlow fan; plan to buy more.

$66.60

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Buy on Amazon — $66.60 Compare to similar pc cases

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Up to 415mm GPU clearance (without front fan) fits RTX 5090-class cards
  • ✓ Mounts up to a 360mm AIO radiator for high-end CPU cooling
  • ✓ Takes ITX, ATX and E-ATX boards up to 11 in. wide in an ATX footprint
  • ✓ Runs horizontal or vertical with reversible I/O panel and movable handles
  • ✓ Front I/O: 2x USB 3.2 Gen1 plus a USB 3.2 Gen2 Type-C port

Cons

  • ✗ Only one pre-installed 120mm SickleFlow fan; plan to buy more
  • ✗ Full 415mm GPU clearance requires removing the front fan
  • ✗ Flat-pack design adds assembly time before your build starts
  • ✗ Full mesh front can admit more dust than solid-panel cases

Manufacturer description

The Qube 540 redefines DIY PC building with its beginner-friendly flat-pack design and fully customizable interior. This compact ATX case removes the limits of traditional layouts, giving you the freedom to create your ideal internal setup. It also supports 3D-printed external accessories, allowing you to personalize both the look and functionality of your build.

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SpecPicks Verdict

SpecPicks scored Cooler Master QUBE 540 ATX Mid-Tower PC Case using a rating × review-volume × price-fit model applied to published specs and reviews across the pc cases category. Compare with similarly-priced alternatives in the pc cases category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for pc cases of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Flexible Orientation Design – Engineered to work seamlessly in both horizontal and vertical positions, with a reversible I/O panel and movable handles that let you customize layout, improve accessibility, and reposition the case effortlessly.
  • GPU Compatibility – Offers up to 415 mm GPU clearance w/o the front fan for full-size graphic cards, including RTX 5090 and RX 9070 XT.
  • Motherboard Compatibility – Supports ITX, ATX, and large E-ATX motherboards (up to 11" wide), all within a compact ATX form factor for maximum build flexibility.
  • Mesh-Optimized Airflow– Full front mesh panel maximizes ventilation for superior cooling under load, paired with a pre-installed SickleFlow 120mm fan for improved airflow.
  • USB Type-C & Full I/O Connectivity – The I/O panel includes 2× USB 3.2 Gen1 ports and a USB 3.2 Gen2 Type-C port, giving you fast and convenient front-access connectivity.

Full Specifications

BrandCooler Master
ColorCharcoal
MaterialStainless Steel, Tempered Glass
Case TypeMid Tower
Model NameQUBE 540
ConnectivityUSB
Model NumberQ540-LGNN-S00
CompatibilityPC
Cooling MethodAir, Water
Mfr Part NumberQ540-LGNN-S00
Antenna LocationBusiness, Gaming
Enclosure MaterialStainless Steel, Tempered Glass
Total USB 3.0 Ports2
Warranty Description2 Year
Supported MotherboardATX, Micro-ATX, Mini-ITX
Item Dimensions D x W x H17.26"D x 8.86"W x 19.37"H
Motherboard CompatabilityATX, Micro-ATX, Mini-ITX
Power Supply Mounting TypeBottom Mount
Recommended Uses For ProductBusiness, Gaming
Other Special Features of the ProductDual Orientation, Fully Modular, Reversible I/O Panel, Tempered Glass, USB-C
Full listing titleCooler Master QUBE 540 ATX Mid-Tower PC Case, High Airflow, Tempered Glass | 415mm Graphics Cards Support, 360mm AIO Support, ATX Motherboards, Highly Customizable Movable, I/O Panel, PSU Multi-Mount

Ready to buy?

Cooler Master QUBE 540 ATX Mid-Tower PC Case, High Airflow, Tempered Glass | 415mm Graphics Cards Support, 360mm AIO Support, ATX Motherboards, Highly Customizable Movable, I/O Panel, PSU Multi-Mount is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $66.60

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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Cooler Master QUBE 540 ATX Mid-Tower PC Case, High Airflow, Tempered Glass | 415mm Graphics Cards Support, 360mm AIO Support, ATX Motherboards, Highly Customizable Movable, I/O Panel, PSU Multi-Mount
$66.60
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