Sparkle Calibre X580 Video Card Review
 

The Calibre X580 graphics card offers impressive performance in most games and synthetic benchmarks, comes with a beefy but very efficient (and silent enough) air cooling solution from Arctic Cooling and if that wasn't enough, it is overclocked from the factory (810MHz GPU/ 2016MHz memory)!

http://www.madshrimps.be/articles/article/1000143