A PC case is mostly a box that moves air, and heat is what makes graphics cards and processors slow down. Here is how intake and exhaust fans work together, why a mesh front beats a solid glass one, and what positive pressure means for dust.
Tap the fan slots in the interactive case to see temperatures change, then learn what to look for at three budgets, plus a few example mesh-front cases to compare.
A gaming PC turns almost all the power it uses into heat. The graphics card and processor slow themselves down when they get too hot, so a case that traps heat can cost you frames. A good case is mostly a box that moves air in a sensible path: cool air in, hot air out.
That is why a plain mesh-front box with a few fans often keeps parts cooler than a stylish glass cabinet that looks like a fish tank. Looks are fine, but airflow is what you are paying for.
Fans do the work. An intake fan pulls cool room air into the case. An exhaust fan pushes warm air out. The usual layout is intake at the front and bottom, exhaust at the rear and top. Heat rises, so a fan at the top helps clear the hot air that collects near the graphics card and processor.
What matters is the total, not just the fan count. Air that goes in must find a way out, and the other way round. One strong fan pushing air into a case with nowhere to go does very little.
Tap any fan slot below to turn it on or off. Green slots pull air in, amber slots push it out. Switch the front panel between mesh and solid glass, and watch the temperatures and dust risk change.
Try the one-in, one-out preset, then the three-in, three-out one. The jump from one fan to a balanced set is large. The jump from there to even more fans is small. Then switch the front to solid glass: the intake fans still spin, but they have to pull air through narrow side gaps, so they move less of it.
A mesh front panel lets the fans pull air straight in. A solid front, often with a glass window on the side, looks neat but can choke the intake. Glass side panels are fine, because air does not enter there anyway. The front is what to check. If you like glass, pick a case where the front is a mesh or has big vents.
If more air goes in than out, the case is under positive pressure. Extra air then leaks out through gaps, so little dust gets sucked in, and the dust that does arrive is caught by the filters on the intake. With more air going out than in, the case is under negative pressure and pulls dust in through every small opening. A balanced set or slightly more intake is a safe choice for most people.
A case that cools well is useless if your parts do not fit. Check three numbers: the maximum graphics card length, the maximum CPU cooler height, and the motherboard sizes it supports. Compare them with the listed size of your card and cooler. Most mid-size cases take full ATX boards and cards of around 35 cm or more, but check your exact model.
Around €60–80: a mesh front, at least two or three fans already included, and room for your graphics card. Skip fancy lights and glass, and spend the money on airflow.
Around €80–110: bigger fans, dust filters that slide out for easy cleaning, and extra fan mounts on top so you can add exhaust later.
Around €130 and up: better build quality, quieter fans, tidier cable routing and a design that suits a desk you can see. These touches are nice, but a cheaper mesh case with decent fans will often cool just as well.
The picks below the article are examples at different budgets, not reviews. Each one has a mesh front and fans included.
A fine-mesh front and fans already fitted at the front and rear give the straight-through airflow the article describes, at the lowest price of the three.
photos, specs, all 5 shops →Big front fans move a lot of air quietly, and there is room for long graphics cards and tall CPU coolers.
photos, specs, all 4 shops →A more refined build with an open mesh front and quiet fans, for a PC that sits on show on your desk.
photos, specs, all 6 shops →
