The EarthWatts does have some power-saving features such as PFC, but will only save a few pennies per month.
The Antec EarthWatts will be compatible with any ATX-standard computer.
The EarthWatts can overheat, but under normal circumastances in a well-ventilated room, should be fine.
The primary place which sells Antec power supplies is Antec itself. Antec has a store on its main website. Amazon, ebuyer and overclockers uk also sell Antec power supplies. Stores such as PC World may also stock these products.
To power a computer, with semi-decent specs, Thermaltake is a good-brand they don't really excel in power supplies when compared to Corsair or Antec however. 430w is a reasonable wattage for a £500 system
Antec deals with TruePower Quattro TPQ-850 and TPQ-1000 for accessories. As far as the power supplies, Antec has the True Power New and True Power Quattro.
A good power supply plays a fundamental part in the stability and reliability of desktop computers. Corsair, Seasonic and Antec each manufacture high quality power supplies.
Antec makes very cheap reliable power supplies.
Antec was created in 1986.
If you mean by brands there are CoolerMaster, Enermex, Zalman, Thermaltake, Antec, OCZ, Seasonic, etc...
Logisys is not a reputable/reliable manufacturers. Answer to your question is no. Look of other manufacturers such as Antec, OCZ, Seasonic, etc. Their power supplies in 500W range should easily power up GTX 460.
Antec have a good consumer ratings with 5 star
Any antec tower that is ATX size will fit your components.