Radeon HD 5870/5850正式发布详解与实战-快科技-科技改变生活

Radeon HD 5870/5850正式发布详解与实战

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2009年09月23日 16:17
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与上代相比，Radeon HD 5800系列的性能效率翻了几乎一番，比如Radeon HD 4870的性能功耗比为7.50GFlops/W，性能面积比是4.56GFlops/mm²，Radeon HD 5870则提高到了14.47GFlops/W和7.90GFlops/mm²。

下边简单看一下Cypress Radeon HD 5800的核心架构。

TeraScale 2统一渲染架构，性能翻番，并有多处关键性增强：指令集、流处理单元、SIMD布局、图形引擎、纹理单元、渲染后端、显示控制器……

Radeon HD 5870由20个SIMD引擎阵列组成，每个包含16个线程处理器/80个流处理核心，以及4个纹理单元，相比Radeon HD 4870晶体管数量增多了125％，核心面积只大了27％，显存内存提高提高了33％，多项技术指标翻番，功耗方面待机降低了70％之多，满载仅增加了17％。

图形引擎

线程处理器

纹理单元与缓存

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