Use this calculator against your actual maximum intended system configuration:
http://www.extreme.outervision.com/PSUEngine
Here's a review:
Antec EarthWatts 430: Green Computing Hits Mainstream
http://www.silentpcreview.com/article684-page1.html
Reviews of some other PSUs:
http://www.silentpcreview.com/section10.html
http://www.jonnyguru.com/reviews.php
Personally I'd go with at least the 430, and really I'd look to see if you
can find that the EarthWatts 500 or another well (and thoroughly) reviewed
PSU of slightly higher capacity regularly goes "on sale" for prices you'd
consider attractive at places like Fry's / outpost.com / newegg.com or wherever.
I've seen prices down around $39-$49 several times on EarthWatts
500 and 550 range PSUs every few months from Fry's / outpost, for instance.
The fact that you want to use an 8800GT suggests you're probably into
fairly demanding gaming or similar pursuits, and those kinds of situations
really stress the temperature and power load in a computer.
While the actual "under load" average power of your system may well be in the
350W to 450W range, in such a hypothetical case you'll have very little margin
for "spikes" of unusually high load, excessive overclocking, excessive temperatures,
and aging. Usually it's a bad idea to run a PSU "normally" (i.e. gaming for
hours at a time often) at loads well higher than 80% of its rated output
wattage. It can be done, but usually it'll function less well, have a shorter
life-span, and be less reliable in power quality.
Many common bad quality PSUs are actually utterly unable to function correctly
past 80% of their marketed "capability", and can actually harm your computer
due to their failures.
The Earthwatts 430 seemed to get nice reviews (read for yourself), so I'd
consider it the minimum acceptable choice if your system load is calculated to be
in the area of 400W or somewhat less range.
For some configurations you might squeak by on a very high quality 380W
unit, though I'd be uncomfortable trying without seeing actual independent
reviews on how that PSU functioned at 90% to 100% of rated load in warm
environments while meeting the voltage and ripple requirements.
Originally posted by: requiem1
Can these run a 8800GT?
Antec earthwatts EA380 - $19.99
http://www.newegg.com/Product/...x?Item=N82E16817371005
Antec earthwatts EA430 - $39.99
http://www.newegg.com/Product/...x?Item=N82E16817371006