Are you looking for peek performance or just something different? Back in the XP-m days I ran a Vapochill on the CPU and a chiller on the GFX card - it was great fun so I definitely recommend it! However, chillers are always a tricky one as the can struggle with loads - not a problem if you are just looking to cool slightly below ambient (which also removes the condensation issue) - but if you are looking to achieve significantly below ambient temps, you will need to check the chiller can cope with your intended load. If memory serves, we used to compare the air temp infront of, and behind the rad to get an idea of the delta. If you push too hard, it overloads the system and goes horribly wrong. Maybe have a play with an old system first