All you really need is a small refrigerator. Get a Tiny one. Mod it to accept connectors @ stuff, and put the processor inside with a fan on it.

Your heat problems will be over and the machine will be much quiter than what you're running now.

I went the 'massive' route with fans. At one point I had a full tower with,,, lemme see,,, 3 + 4 + 2 + CPU fan... all it did was make lotsa noise.

These days I try to go for quieter stuff. I'm even planning to migrate to P4s JUST to get away from all the noise.

Luck