Hi, i need your opinion, which is the best in lowering your Processor & Graphic Card temperature coz my computer is very hot, Fan or Water Cooler..? or u have other choice or option? what do u prefer?

i've never done that, but i guess i'd use fan cooler. water cooler? pouring water onto your compie?

A good watercooler is potentially better than most or all aircoolers, but it's also a lot more expensive (at least twice the price) and a lot more hassle. Installing regular coolers is usually pretty easy, but with watercooling you can't afford any spillage and then there's the tubes, radiator and pump you have to place in (or out) of your case.

I've never used watercooling though, air cooling is quite sufficient as my comp won't even overclock that high (crappy fsb lock-ups).

Unless your components generate insane amount of heat, don't bother with water-cooling. They are relatively expensive and are troublesome to set-up/maintain. Air cooling solutions come cheaper and can perform just as well with most set-ups. I'm using a Scythe Ninja CPU cooler (a big chunk of heatsink fins) with my X2 processor in fanless mode. Complete silence at a very reasonable price.

Regards.

What are your specs?
and what type of case do you have?

For water cooling or air cooling, then check out
this site for review on some of the products.

MaximumPC

BTW: They don't talk BS.

I'm using a water cooler and a very overclocked Athlon X.P. 1700+ CPU, my chip defaults to 1.47 GHz with 1.5v core, I'm running it at 2.4 GHz with 1.8v core, my CPU even under the worst case full load stress tests barely breaks 30c temps. It has been running this way for a couple years now. The highest overclock I reached was 2.6 GHz but that required 1.95v core and wasn't completely stable so I backed off to 2.5 @ 1.9v which was stable at full load for 40 hours of testing, so to be absolutely sure I keep it at 2.4 / 1.8v just to improve the lifespan of the chip. The highest POST speed I have reached was 2.8 GHz but it won't even start booting at that speed unless I run ice water through the system.

The main advantage I have is my computer is reasonably powerful however compared to most systems it is almost silent, the loudest thing on my computer is a small box fan I have blowing into the case to keep the hard drives cool. The radiator is actually mounted in another room; the water lines go through the floor into the basement to the 120mm radiator that I have a 120mm delta 4000 RPM fan (190 CFM) mounted on it. That is the true usefulness of a radiator and waterlines for cooling; if you have a pump that can handle it you can transport the heat from your CPU into a different room entirely if you want to. Using water you can get the best of both worlds, a PC that is quiet as a mouse and has a ridiculously powerful cooling system at the same time.

depends on your overclocking desire i have a mild Oerclock here (3.2Ghz @3.6 Ghz) and i can go way higher than that if i raise the voltage but i dnt want to :P but im on air cooling and it does the job pretty good (Zalman CNPS 9500 LED)