Well, power consumption is still kinda important on a desktop. All that power has to go somewhere and you need a cooler that can keep up or you'll be losing more performance from thermal throttling.
My current desktop water cooling setup can handle 700W under load easily. After setting it up my test was to actually spin everything up under 100% load with 2 crypto miners (1 for GPU and one for CPU, in 2014) and did it for 10 hours straight. Peak temp was 60 degree Celsius in hot July. Why I never continued with that? Because at the time bitcoin was 120 dollars and the electricity was 10 times more expensive. According to worker pool I joined at the time in those 10 hours I've earned 3 cents. Anyway, back to topic - I trust my water cooling 100% (also I made it manually because I like to build things).
