Best PC cases under $100 in 2021

Just making this budget, the Lian Li Lancool 205 Mesh is simply incredible. Not only does it look the business, but it comes with a pair of 140mm RGB fans in the front and a 120mm RGB fan in the back. It's excellent value. It's also a dream to build in, with acres of space, tons of cable management points, and a removable 3.5-inch HDD caddy. The icing on the cake is the removable radiator bracket in the roof which makes sorting your CPU cooler installation a breeze.

Despite being compact, there's plenty of space for an ATX or E-ATX build, with hidden drive cages in the base and at the back of the motherboard tray. The Phanteks P350X features a tempered glass side panel joined by an RGB strip running along its base, along with two further RGB strips on the front. Each side of the front panel is covered in mesh, so you're getting solid airflow, and it supports dual 120mm or 140mm fans in the front or a 280mm radiator.

Little cases like Thermaltake's Core V22 are perfect for media PCs and storage boxes. It can fit an M-ATX or Mini-ATX motherboard and accompanying components, but there's ample room in such a small chassis just in case you want to throw in a GTX 1080. Another bonus of the Core V21 is the price, which, as you can tell, is quite low.

The Phanteks P400A is a stunning mid-tower, sporting ample room for even the largest GPUs, and has many features that make for a stunning PC build. It comes with a trio of 120mm fans and supports up to a 360mm radiator, along with full-sized power supplies. Plus, it has a full mesh front panel to improve airflow and help keep temperatures low. And the full-length tempered glass side panel will show off your handiwork to all who gaze upon it.

NZXT's PC cases are always head-turners, and the sharp lines of the NZXT H510 are no exception. This mid-tower packs everything you'd want for a high-class build. It's available in different colors, has a pretty elegant cable management system, a pair of 120mm fans included with support for full water cooling setups, and a three-quarter tempered glass panel, plus USB-C on the front I/O panel. It looks pretty special with some RGB lighting, too!

You might think you have to pay a significant premium to get a super-quiet PC case, but that's far from the truth. True to its name, the Cooler Master Silencio has sound dampening material on the front, sides, and top. There's no tempered glass here, but the front door can be reversed to open whichever way you desire, the top can be removed for added ventilation, and it comes with a couple of 120mm silent fans to get your build going.

Going for style and tempered glass doesn't have to mean sacrificing on important airflow, and the Corsair 275R is designed to combine all of these things. You can get it in white or black; it's designed for up to ATX builds and comes with a trio of 120mm fans to get you started. It also has support for up to six 120mm fans in total or a pair of radiators up to 360mm, so whatever you build will always stay frosty.