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cyrnel · 01-17-2005, 01:32 AM

Agreed on the coolers.

A good 350W supply will be fine unless you get into hungry combinations.

A hot P4 + motherboard combination may need 200-250W. AMD64 50-75 less.
Video card, up to 45W from AGP.
Monster video card, something like a 6800Ultra, can consume 80-100W on the aux connector in addition to the AGP draw.
Add 15W/HD, 20-30W/optical, 5-10W total for 2 or 3 fans.

My rule of thumb has come to this: For an average system without a bunch of drives, if your video card doesn't have an auxiliary power connector then 350 is plenty. if it does then evaluate 12V & 5V independently or jump to a 400+ supply. Problems can arise from ratings vs. actual, and how your parts' 12V vs. 5V requirements match the supply.

01-17-2005, 01:32 AM	#4 (permalink)
cyrnel Adequate Location: In my angry-dome.	Agreed on the coolers. A good 350W supply will be fine unless you get into hungry combinations. A hot P4 + motherboard combination may need 200-250W. AMD64 50-75 less. Video card, up to 45W from AGP. Monster video card, something like a 6800Ultra, can consume 80-100W on the aux connector in addition to the AGP draw. Add 15W/HD, 20-30W/optical, 5-10W total for 2 or 3 fans. My rule of thumb has come to this: For an average system without a bunch of drives, if your video card doesn't have an auxiliary power connector then 350 is plenty. if it does then evaluate 12V & 5V independently or jump to a 400+ supply. Problems can arise from ratings vs. actual, and how your parts' 12V vs. 5V requirements match the supply.