Thermaltake CAPO X Test Shows Two PCs Can Share a Case—and Heat

The Short Version

Thermaltake’s CAPO X fits two independent computers into one full-tower enclosure. In a review described by TechRadar, both systems maintained stable temperatures under simultaneous workloads, but the upper system became approximately 5°C warmer than when it ran alone.

Why It Matters

Sharing a chassis does not make the two cooling environments independent. TechRadar says heat from the lower Intel system appeared to affect airflow around the upper AMD build. That explanation fits the warmer air observed at the upper rear fan, although the test does not establish an identical temperature increase for every configuration.

For a builder, the useful lesson is to assess both machines running together. Testing each one separately would miss the interaction reported here.

The Bigger Picture

The tested upper system paired a Ryzen 7 9800X3D with a Radeon RX 9070 XT. Below it sat a Core Ultra 7 265K and GeForce RTX 5070 Ti. These component choices help define the result’s limits: it describes one dual-system arrangement, rather than a guarantee for any combination of hardware.

Assembly brings its own tradeoffs. Each computer needs separate motherboards, power supplies and storage, and the review noted the absence of a fan hub. TechRadar describes extra work managing connections and airflow compared with a conventional single-system build.

What to Watch

Further tests with different components and fan arrangements would help show how broadly the thermal result applies. For now, the reported temperature stability is encouraging within the tested conditions, while the upper system’s increase is a reason to plan airflow across the whole enclosure.

Would putting two computers in one enclosure be worth the extra cooling and assembly work for your setup?