Bet they're not as cool as my case fans...
I got these in the intake ports and the main exhaust at the back... very nice. I must take some pics of my PC and put them up if I ever get my webserver running...
Cyrax, your room shouldn't be any cooler just cos you have some new fans - in fact, if any thing, it should be warmer. The fans don't mean less heat is produced, they just mean that it gets carried away from the source quicker resulting in a cooler computer.
If you really want your PC to run cooler, buy a better heatsink. it's the one part of your PC that you should think about extremely carefully, cos it governs how long your processor can last - the OEM box we use for data processing here has a stock heatsink and runs 24/7 at full load, and the CPU idle is 60 degrees, which is way way too hot. Silicon starts to degrade at about 70 degrees, so the further you can keep your processor from that the better. So we're going to rip out the ****ty OEM heatsink and put in a great big one probably with a 45 CFM delta fan on top, and then put another intake with a duct in the side of the case. That should keep the bugger a bit more chilled.
Or we could just wire it into the central heating system...