It is hard to believe that KitGuru only opened a month ago, we have been working around the clock to ensure that we review the hottest products on the market … even if some of them have been out for a while. Today we are going to look at the Sapphire HD5770 Vapor X, which on paper looks to be one of the finest HD5770’s available. The Sapphire card comes with a very modest 10mhz increase on the core, raised from 850mhz to 860mhz.