Well I know people will say what I have is overkill (because it is), but I overclock every PC I have and on the PC I use the most (just because it'* the most convienient) this is what I have:
4 80mm fans on the front sucking out
2 80mm fans on the left side blowing in
2 80mm fans on the right side blowing in
2 80mm fans on the rear sucking out
1 80mm fan on the top sucking out
A thermaltake Volcano 9 heatsink/fan on the CPU
I also have round IDE cables so it doesn't restrict the air flow so much, but with the 9 drives in the computer it still does cause there are wires everywhere.
I don't figure it is too much overkill because the case was designed for those fans, I didn't add in an where there wasn't a spot, and I actually cut out 2 120mm fan spots when I put my window in.
That PC has a 1.4Ghz Celeron III (socket 370, 100mhz FSB). I have it overclocked to 1568mhz (112mhz FSB), and it is rock solid stable and runs ~88*F, and the motherboard usually runs right around 79-80*F. I have successfully overclocked it to 1680mhz before (120mhz FSB), but the temps were getting up to about 110*F, and that is too hot IMO, and I don't have a need for it to be that quick as I have other PC'* that are quicker and I don't need to fry the chip, but it seemed to be stable at those speeds too. It would probably run quicker, but I don't have any reason to try.
The problem I have is that the computer is so friggin loud I can barely sleep at night, and I can't turn it off because it is the home network server, so it is the PC with the internet connection, and people use the internet 24/7 here so its not like I can shut it off for the night.
1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!