Benchmark Reviews: AMD's new Radeon HD 6900 series occupies the top position in their single-GPU product hierarchy. The two models, the HD 6950 and HD 6970 are very much like the HD 5850 and HD 5870 that they replace. The xx50 cards generally run at a lower clock rate and have a few sections of the GPU disabled, presumably because the vendor is trying to reclaim chips that have a small, isolated manufacturing defect. But what happens when your manufacturing process is so good that you're not producing enough "defective" chips to meet the market demand? When is a 6950 not a 6950? Well, quite often, as it turns out. In the case of the PowerColor PCS++ Radeon HD 6950 video card, it just depends on which way you flip the switch. Push it one way and you have a standard Radeon HD 6950, with 1408 shaders running at 800 MHz. Push it the other way and you have 1536 shaders running at 880 MHz, which is the exact configuration of the HD 6970. The only difference is that PowerColor kept the 1250 MHz memory chips in the PCS++, instead of springing for the 1500 MHz memory, like a real HD 6970 has. Join Benchmark Reviews as we investigate this unique product from PowerColor, that's sure to cause some excitement in the marketplace.