> The power consumption for your new card is around 160w on it’s own.
adding a little maybe:
so, you know 160 for the graphics, you can look at the label on the
hard drive, CD/DVD reader/writer for the watt needs for those…and,
the intel site has current draw for their chips and boards…just all
of that stuff up, and my advice is if it adds up to (say) 400 then you
need a 600 watt supply, at least…my rule of thumb is multiply the
known need by 1.5 and buy that size supply…(others might say
now, the difference in price of a 450 watt and a 600 watt is not so
very much…but, here is the deal, box makers are in the business to
MAKE MONEY (surprised?) and they will almost always save the few buck
by stuffing in the smallest, cheapest power supply they can get away
with…JUST enough to do the job with the hardware supplied, for the
length of the warranty period…after that, or if you add stuff they
check out http://www.tomshardware.com/
wow! they used to have practical articles on how to pick a supply,
seems now all they offer are mini-advertisements…too bad!!
NOTE: i didn’t read any of the offerings so i can’t recommend any
particular one…read several, add up your watt need today AND figure
you will keep the machine 5 (?) years and may wanna add something
great next year…etc…
NOTE2: an overtaxed power supply can easily cause lots of ‘little
problems’ which are really difficult to track down…
To add to DD’s comments
The exhaust fan on larger PSU’s is often bigger than the case exhaust opening for the PSU.
I had to buy carefully my case, to make sure the PSU wasn’t going to be forcing its ventilation through a smaller aperture it’s said same.