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Cooler Master’s Q300 series of budget-friendly, compact Micro ATX/Mini-ITX cases started in 2018 and aimed at first-time builders on a budget. It came in multiple flavors, such as the Q300L (with distinctive patterned dust filters) and the Q300P, which added extra panels, RGB lighting, and handles. In 2023, the Q300L V2 was released, swapping out the acrylic panel for glass and adding a fast 20 Gbps USB Type-C port among other things. Fast forward to today: the company recently released the Q300L V3, with a bigger overhaul than the first versions, increasing its size slightly, enlarging the panel perforations, reinforcing the structure, and adding flexible front IO placement.
Even with all the new features, the Q300L V3 is the ‘Lite’ version of the Qube 340 (which includes handles - $54.99) and remains very affordable, with an MSRP of $44.90. However, you can currently find it on Amazon for even less, under $40, at the time of publishing. The updated Q300L and its slightly larger frame aim to offer increased airflow through enlarged panel perforations, more space for the CPU and graphics card, and continued vertical or horizontal orientation options so you can tailor the build to fit any space. It also includes one 140mm fan. As far as looks go, not a lot has changed, but for a sub-$45 chassis with tempered glass, you won’t mind showing it off.
We'll cover many more details inside and outside the case, showcasing the features and any issues we may encounter during the build process. We'll also run the case through thermal and noise testing to show how it performs compared to other cases and whether it has a chance of making our best PC cases list. Below are the case's specifications from Cooler Master.
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Q300L V3 Product Specifications
Swipe to scroll horizontally Type Micro ATX Dimensions (H x L x W) 15.3 x 15.2 x 9-inches (388 x 386 x 230mm) Motherboard Support Mini-ITX, Micro ATX Back-connect Motherboard Support No Color Black, White Storage Support (1) 3.5-inch -or- (2) 2.5-inch PCIe Expansion Slots 4 Fan Support Top - 2x120/140mm
Front - 2x120/140mm
Bottom - 1x120/140mm
Rear - 1x120/140mm Pre-installed fans (1) 140mm DF1402512RFLN (Rear) Radiator Support Front - 120/240mm
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