I've owned an HVAC buisness for more than 20 years now. Whatever heat you remove from your rig has to go someplace (the room) A
mini split is the ultimate solution. Super quiet, very efficient, but costly.
Heat always move from hot to cold. What you really need to do is remove the heat. I take it you have central A/C already in your home? Where is the air handler to the central unit? In the attic or the basement? Is it possible at all to get a return air duct into the room somehow? That would be your cheapest solution.
You should at least run the central unit fan to "ON" not "auto" while gaming. That will at least run the fan constantly, which will help equalize the air temp thoughout the house. Leave the door open and a fan, pushing the hot air out, will help also.
I'd go for the mini split!
Edited by ski-bum - 10/22/12 at 8:53pm