This is the 'CPU capsule' for the K6 375. On top of the capsule you can see the thermal sensor. At the right side, the liquid freon substitute enters the capsule, at the bottom side, the freon substitute leaves the capsule in gas phase.
This is the cooling unit in the bottom part of a tower case. You can see the compressor (actually manufactured by the Danish (no, although Kryotech stated it's German, I was almost killed by 90% of Denmark, telling me it's Danish!!) company 'Danfoss') and the cooler, where the gas changes back to liquid, releasing the heat.
This is the 'CPU capsule' for the K6. Inside it you could see a labyrinth through which the freon makes its way through the capsule. There's a different capsule required for each different CPU.
That's the K6 system from the outside ... looks pretty harmless, doesn't it?