cpus use up to 140 watts now a days but the graphics card will require a lot as well
http://educations.newegg.com/tool/psucalc/index.html
http://www.antec.outervision.com/PSUEngine
Graphics card. For certain.
Depending on your graphics card, it can draw up to 250watts, or even more if it's overclocked.
After that, processor will take up to around 125-140, in a high end system
Multiple graphic cards, with the CPU close behind.
There's generally two answers to this, but the single most important component is the graphics processor. The central processor is also incredibly important.
Video Card.
Video Card.
Depending on your wants/needs, $750 - $2000.
The OCZ StealthXStream is a great camping power supply.
CCL custom builds computer systems. Puget Systems is another company that will do a custom computer build for your home or business. Cyber Power will do computer builds for gaming.
dont think what your asking is even possible. I got my gaming comp from Best Buy and had them put in a stronger power supply and graphics. Its now a very nice comp but ran me about 1200.
With the amount of power modern gaming-oriented video cards draw, the case is fine as it is and everything else needs to be upgraded.
SRAM retains its contents as long as the power is connected
alienware> is not a computer itself and is a computer brand, the best computer for raw power is being used for commercial use but the best for gaming can be made yourself by using the highest end parts possible.
This depends on the screen type, the screen size, and also the computer's power. For example; a low power computer may use 200watts, where a high power gaming setup might use 800watts. A screen could use as little as 5watts, if it is a small LCD screen, while a big CRT monitor might use 200watts. Your screen should tell you it's power usage, as should your computer, if you examine the power supply.
A gaming computer is basically a highest quality computer - they have the highest memory hard drive, most processing power, chunky graphics card, etc., etc. They use this top of the line stuff to show highest performance while playing your game. (Reducing lag, better resolution, etc.)
hard drive
If its anything like mine there should be a small stick looking switch in the very power, don't confuse it with the actually power cord switch