I want to replace my power supply, it makes a horrid buzzing noise now and then. I need to know where to get a new one at a good price? Any help? Does this look like a good deal: http://www.dvwarehouse.com/products/20361.html Can I find it cheaper elsewhere? Where? Does it matter if you get a max watt size that is higher than what you may need? Also, how exactly do I tell what max watt I do need? Does having a lot of peripherals hooked up put a strain on the power supply requiring a larger max watt? Thanks for any help!!!