Back again about my Slipstreams. I wrote last spring about some failing fans. Well a good cleaning and they're running again - albeit not at full speed.
I figure that it is a matter of time before the slow ones do reach an unuseable speed and the ones still running fien (2/5) start to slow.
I had originally considered replacing them (3 800rpm, 2 1200rpm) with equivalent speed Noctuas but someone suggested I use all 1450 rpm Gentle Typhoon's on a controller.(I'd have preferred 1150's but cannot find them anywhere.)
These would be going into a P182 as 2 front, rear, top and CPU fans. Higher speed in the front and CPU fans to maintain positive pressure.
Gentle Typhoons are quiet at 800rpm but they do not undervolt well so buy the 800rpm@12v versions if you want quiet.