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  1. Hardware
  2. Desktop PCs

You can swap around the position of the front IO on Cooler Master's updated Q300L case, and its price is hard to argue with during a RAMpocalypse

News
By Duncan Robertson
Published 16 June 2026

Cooler Master's latest PC case is as beautiful as it is practical, but if you want to hide your PSU cables, it might not be for you

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Two different Cooler Master Q300L V3 cases with different front IO panel positions
(Image credit: Future / Duncan Robertson)
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Cooler Master showed off the updated version of one of its most popular and accessible PC cases at Computex, and lo and behold, it's now hit the shelves. The updated Q300L V3 holds onto the line's previous mATX form factor, but it brings some quality-of-life updates and more modularity into the mix for your next gaming PC build.

Straight from the off, I'll say that perhaps the most impressive thing about this case is that it's still got a super affordable price tag, which tracks from the V2 and V1 models of the Q300L. At just $44.49 at Amazon, you're certainly off to a good start meeting your building budget, especially right now during the RAMpocalypse.

Cooler Master Q300L V3
Cooler Master Q300L V3: $44.99 at Amazon

The only model of the new Q300L I'm seeing at Amazon is the black model. It's impressively the same cost as the original V1 of this case though, which is a great bargain when a lot of cases from bigger brands can easily set you back closer to $100.

View Deal

But beyond the price, Cooler Master has done a great job of issuing updates to this case. For starters, because it's something I'm a big fan of, you can swap the position of the front IO to suit your preferences. If you don't want it down on the bottom of the front panel, you can move it up to the top of the front panel, the front of the top panel, or even the rear of the top panel if you wish.

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Speaking of that front IO, Cooler Master has updated it so that it now has a high-speed USB 3.2 Gen 2x2 Type-C connection, dual USB 3.2 Gen 1 Type-A ports, and a combo audio jack. That could be a huge boon for people using this size of case, because with mini-ITX and mATX motherboards, you can sometimes lose out on connectivity in the rear.

Image 1 of 2
The white Cooler Master Q300L V3 at Computex 2026
(Image credit: Future / Duncan Robertson)
The white version of the Cooler Master Q300L V3
(Image credit: Future / Duncan Robertson)
Image 1 of 2

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The white Cooler Master Q300L V3 at Computex 2026
Image 2 of 2

View Original

The white version of the Cooler Master Q300L V3

The Q300L V3 has grown 12.5% from the original version, now giving you space for higher-spec components. The refreshed model has CPU cooler clearance of 178mm, GPU clearance of 366mm, and radiator support for AIOs up to 240/120mm. On cooling, the case comes with one 140mm rear fan pre-installed.

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For some extra utility though, Cooler Master has allowed for 3D printable add-ons thanks to the dot-textured chassis panels. With this design, you could attach a headset hook, some handles, or potentially even some mounting systems.

A white Cooler Master Q300L V3 on its side and up close with its metal handles on a blue background

(Image credit: Future / Duncan Robertson)

So far at Amazon, I'm only seeing a black version available, but back at Computex I saw a white and wood-finished version which may be coming later.

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I'm always a fan of innovative cases on the smaller size (my own personal build is an mATX built inside the NZXT H3 Flow), so I really like the look and feel of the Q300L V3. I especially love the versatility it could bring for PC builders who want to lay the case down on its side, or just folks who want an affordable box that isn't going to take up an entire desktop.

Three Cooler Master Q300L V3 cases with different finishes at Computex

(Image credit: Future / Duncan Robertson)

That said, if there's one shortcoming here, for me it's the lack of a hidden PSU tray. I don't have anything against PSUs in general, but most cases hide them away for a reason; there are very few ways to make them look neat and tidy, because they have loads of spindly cables coming out the back of them. Opening up the PSU tray does allow for better access to the airflow of the main PC chamber, but with a large tempered glass panel on the side here, you do invite that cable mess into the vibe of the build, which isn't my favorite.

Still, for the price of the Q300L V3, you're still getting a lot of functionality and style other brands would charge you more for.

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If you're still seeking out the other parts of your new build, check out the best CPUs for gaming, the best graphics cards, and the best RAM for gaming.

Duncan Robertson
Duncan Robertson
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Hardware Editor

One of my earliest memories is playing SuperMario64 and wondering why the controller I held had three grips, but I only had two hands. Ever since I've been in love with video games and their technology. After graduating from Edinburgh Napier University with a degree in Journalism, I contributed to the Scottish Games Network and completed an Editorial Internship at Expert Reviews. Over the last decade, I’ve been managing my own YouTube channel about my love of games too. These days, I'm one of the resident hardware nerds at GamesRadar+, and I take the lead on our coverage of gaming PCs, VR, controllers, gaming chairs, and content creation gear. Now, I better stop myself here before I get talking about my favourite games like HUNT: Showdown, Dishonored, and Towerfall Ascension.

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