I did the PC Power & Cooling Fans in all 4 positions of my SX830. Running a fully loaded 1GHz TBird, 3 SCSI drives, CDRW, DVD, Tape, LS-120, Floppy, GeForce2 MX, 10/100 Enet (running @ 100Mbps), my box registers about 9-10 degrees Farenheit over ambient(Have the probe from a RS external/internal thermo stuck in the middle of that thing). And it's pretty quiet. I think the loudest thing in there is my Alpha PAL6035 w/high output sunon 60mm fan (from
www.cooltek.com. My next move on that thing is to go back in and put in a rounded UDMA EIDE cable, self round my 2 SCSI cables, and replace the PAL6035 with a taisol GCK760092.
Those silencer fans are very nice. One caveat tho. They are pictured with a single ended connector, and that's the way they come stock from PC P&C. I mentioned this to them, and they said, that if you ask, they can double gang them (put on passthrough type plugs). Check with them when you order. Otherwise, you will need a bunch of "Y" power splitter cables (If you need all the connectors, then you will need a total of 4 splitters). Or some other nice arrangement to get more power to the fans....