Question about Watercooling

[SH64]

I may go ahead & overclock my CPU , so i want to ask which is better ?

Internal Water Cooling or External & why ?

& what do i need to know before i start use water cooling in my PC ??

& on a side question : what do you think about Thermaltake's Silent Tower for CPU overclocking ? is it worth it ?
http://www.overclockercafe.com/Reviews/cooling/Tt_SilentTower/index.html

[|JuiceZ|]

Everything you need to know can be found in this excellent guide (http://www.subzerotech.com/index.php?module=sz_articles_display&id=22&page=1) from SubZeroTech (http://www.subzerotech.com/)

[ricercar]

An external radiator allows more to flow over the cooling fins than an internal mount. Room air is also theoretically cooler than the internal air.