Anyone who has heard of ATI video cards has probably heard of Sapphire Technology. Sapphire is the largest producer of AMD/ATI graphics products in the world, and do far more than rebrand a product with their own label. The Radeon HD 4000 series launched with tremendous success not long ago, and Sapphire has tweaked the design to produce their own high-performance Toxic Edition of the popular Radeon HD 4870 video card. In this article, Benchmark Reviews tests their graphics card against the competition to find out if a factory-overclocked model is worth the money.