I want to downsize my PC case without replacing my current components. I'm using an RTX 5070 and a full-size ATX motherboard, and I'm not working with a strict budget. What's the smallest case that could fit my motherboard, graphics card, power supply, CPU cooler, and storage drives?
5 Answers
Please list the complete parts list before choosing a case: the exact motherboard model, GPU brand and dimensions, PSU format and length, CPU cooler or radiator, and all 2.5-inch or 3.5-inch drives. Even a case that supports ATX may not have enough clearance for a long three-slot graphics card and a large power supply.
If you are willing to replace the motherboard later, switching to microATX or Mini-ITX opens up many more compact options, including cases in roughly the 20–35 liter range and smaller. With the current ATX board, the realistic target is a compact ATX case rather than an ultra-small one.
The motherboard is probably the biggest limitation. Small-form-factor cases usually require microATX or Mini-ITX, so keeping a full-size ATX board rules out many of the smallest options. The exact GPU model, PSU size, cooler, and number of drives are also necessary to confirm compatibility.
For a compact ATX build, take a look at the SSUPD Meshroom V2, but check the detailed compatibility requirements for your specific GPU, PSU, motherboard layout, and cooler before buying. It can support some large graphics cards, but not every combination will fit.
If you want something easier to fit without changing parts, cases such as the Cooler Master Q500 series, Fractal Design Define C or Define 7 Compact, and be quiet! Pure Base 500 are reasonable places to start. They are smaller than many oversized ATX cases, though they are not true small-form-factor cases.
I’m trying to keep the motherboard for now, so I’ll gather the exact GPU, PSU, cooler, and drive dimensions and compare them against the case clearance specifications.