There’s a lot of options for heatsinking including large aluminum heatsinks you can buy with thermal tape that can attach to the outside of cases. That sounds interesting. What kind of heatsink is that? Mind showing me some images? Generally you want to avoid those kinds of passive cooling PC cases. Even the well built ones suffer heat issues for various components. They’re really meant for low end projects like running a display in a mall that shows a map and does basic tasks on a mini OS. Not for running a PC you’re regularly reading/writing files from. Yes, that was my mistake and had to learn the bad way… but well, I got to stick with it for a while… One last thing. Unless that’s a reversed fan (unlikely) you really want it blowing air on the case not trying to pull air away as you have it. It’s much more efficient that way in most cases. There’s not enough clearance for it to be a very effective puller fan. So in my opinion try reversing the direction you have that fan mounted. I’m so used to using fans to pull air, that I didn’t think about that. Gonna give it a try too, thanks!