I'm thinking of doing something similar to Rusty's Quiet In-Desk PC
. I plan on having my motherboard horizontal like he has. I was just wondering what the pros and cons are to mounting a fan so that it blows the air away from the HS instead of onto it. My thought is that since you don't see this configuration often, that it probably isn't as efficient. I would be ducting the air out of the back similar to Rusty's again. My difference is that I plan on having the fan directly on top of the HS still.