here in Katoomba there is a tip and in that tip there is a wonderous place know to some people(probably all people) as "the recycling shed.
me + my bros found many computers there:
4gb ram, 1tb hard drive, 3ghz, 2gb graphics, HUGE cooling, antec case
hp media computer
laptops chargers batteries hard drives wifi routers power supplies flat screen tv practically anything you can think of
but yout not allowed to takje electronics. so be sneaky