PowerColor Radeon HD 4850 512MB and CrossFire performance review

After taking a look at Sapphire's Radeon HD 4850 offering last week, today is the turn of PowerColor's take on this SKU.  Once again, this particular board uses both AMD's reference clock speeds and cooling solution, so to spice things up a little we've made use of two boards to see how a couple of Radeon HD 4850 cards perform in a CrossFire configuration.

There should be little more by way of an introduction needed beyond those simple facts, so let's not dally and dive straight into our review!