GAINWARD RADEON HD 4870 Gainward Radeon HD 4870 review which we are comparing to the Gainward Radeon HD 4850. Gainward Radeon HD 4870 is a powerful video card with 800 Shaders for amazing gaming performance. The Gainward Radeon HD 4870 also features advanced GDDR5 memory running at 3600 Mhz DDR which is 45% faster than Gainward Radeon HD 4850."