the link you supplied shows a customisable PC with the option to buy the base package then add upgraded components if you wish. if you look at the "tech specs" it shows it only has a 360w power supply which in my opinion is sadly under powered. I also cannot see any way of upgrading this nor can i see any way of upgrading the VGA card.. I am sure there are better deals out there but we would need to know what you intend to use your PC for and your budget...
Glad to help CodeMeister, the links are to alternative sites that might interest you as far as customising your PC to meet your needs, both sites are tried and tested on this forum ( i have bought from Arbico, faultless) a lot of the packages shown come with monitors as well, the Dell package did not.
I've currently got an old Dell Dimension Pentium 4 2.8Ghz, so I should imagine that the new Core i7 processors would have better power management and therefore use less electricity (when idling at least).
Don't forget that the power consumption is going to depend to a large extent on how hard you're working the CPU. A PC that's assigned to heavy duty number crunching or video work will draw more power than an equivalent machine that's web browsing or word processing. click here it's an old article, but still worth a read.
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