does it matter the psu i should get like example 2 psu's same wattage, a well known make costing £££ or a cheap make costing peanuts il show you a website to show you what im talking about
http://www.scan.co.uk/Products/Products.ASP?CatID=33&Category=Power+Supply&Thumbnails=yes
http://www.scan.co.uk/Products/Products.ASP?CatID=33&Category=Power+Supply&Thumbnails=yes