Silly question for a stupid build of mine. I have a very small chassis (Optiplex 990, 2011 sff workstation) which I have crammed modern itx hardware in, and 4 HDDs (2x3.5", 2x2.5"). It has ~3-400W continuous power draw, depending on what it's doing. The airflow is really bad in this chassis. The drives and the mobo take up the entire top, with no room for any fans larger than 40mm. No side fan mounting options either. The bottom has room for one 80mm. I have a big 80x40 fan (server salvage) and some 40x30s. Right now, the 40x30s are feeding the CPU's air cooler. There's small holes in the ducting to blow air at the VRM heatsink. No significant cooling for the drives yet. GPU and PSU get ample cooling, since they're in the path of the 80mm. Currently, all fans are in intake. I know that's what some servers do, force air in to compensate for poor paths. I can do this to some extent, but at over 20-30%, these fans are too loud to be in the same room as. Currently working on adding ducts to get more of the air from that single big fan to the rest of the components. Thinking of adding foam to the chassis as well. I know this won't reduce the noise much, but hopefully it should lower the pitch a bit? Anyone done anything like this, any tips to share? I know it's an outrageously stupid thing, I have and can build a significantly better chassis, or add holes to it to mount a lot more fan, but I'm quite fond of this one and I like doing silly things.