@systix

electric bills is variable between u and forumers due to computer rig, power saving setting etc if you turn on 24/7
I suggest you try 1month for your self if you really want to do so. make sure your eyes don be like this when see the bill ->

Well i don't know what you downloading. if you want to reach your download target per day but afraid electric bills.
my advice you upgrade your internet to higher. ( 1Mbps to 2Mbps? ) for more RM30 or RM20 (2Mbps to 4Mbps?)

@normeck

Ya its ok. i can see your Attached thumbnail(s). A picture showing at there. Did I answered your super ultra simple question?

erm can i ask if a 550w huntkey can support Q9400 with HD4850?
Is the brand reliable? rm145 for 550w true power is very cheap

This? Yes, vacuum generates static electricity which can send your components, if not the entire system, straight into the junkyard. You can use a vacuum with tiny hose to remove the dust on the fans, but never use it near any other electronic component.

AMD Dragon Platform is basically a combination of AMD Phenom processor, AMD 790-series motherboard and Radeon HD 4800 series graphics. Worth it or not, that depends on the overall specifications.

@lucifah

That is what I've been trying to tell, theoritically it may damage, but having used the vacum cleaning method for years taught me that some people worry too much of unlikely problems.

why not clean the dust with the paint brush first, and then vacuum the debris of dust that fall at the bottom of the case, safe, and clean.