12 Graphics Card Generations Compared by the Performance Jump Each Delivered
7. The Refinement Phase - DirectX 10.1 and Efficiency Improvements (2008-2009)
The seventh generation focused on refining the unified architecture while improving power efficiency and manufacturing yields, exemplified by the NVIDIA GeForce GTX 280 and ATI Radeon HD 4870. Performance improvements were more modest at 1.5-2x, but this generation delivered significant advances in performance per watt and manufacturing cost reduction. The GTX 280's larger die size and higher shader count provided brute-force performance improvements, while the HD 4870 demonstrated that architectural efficiency could deliver competitive performance with smaller, more cost-effective designs. This generation marked ATI's return to high-end GPU competitiveness after several years of NVIDIA dominance, with the HD 4870 often matching or exceeding GTX 280 performance while consuming less power and costing significantly less. The introduction of GDDR5 memory provided substantial bandwidth improvements that enabled higher resolutions and more complex shading effects without proportional performance penalties. DirectX 10.1 support added incremental features like improved anti-aliasing and more flexible resource management, though adoption was limited due to the small installed base of Windows Vista systems. The generation also saw the maturation of multi-GPU scaling, with both SLI and CrossFire delivering more consistent performance improvements across a broader range of applications. Manufacturing improvements to 55nm processes enabled higher clock speeds and better yields, making high-performance graphics more accessible to mainstream consumers.
