7800GTX芯片内建32条管线？-快科技-科技改变生活

7800GTX芯片内建32条管线？

P2MM
2005年06月25日 01:21
0

Beyond3d论坛的DaveBauman今天暗示我们，nVIDIA Geforce 7800GTX图形芯片很可能内建32条渲染管线。DaveBauman表示，Geforce 7800GTX图形芯片的尺寸是330平方毫米，而Geforce 7800GTX图形芯片采用的12英寸晶圆可以切割出150-170颗Geforce 7800GTX图形芯片，一片晶圆上可以切割出的芯片数量越少，缺陷芯片的比率就越高，TSMC 110nm初期制程每片晶圆上的缺陷芯片高达130-160颗，尽管现在TSMC 110nm工艺已经成熟，并且缺陷芯片比率降低，但是完全没有缺陷的芯片数量仍然不多。G70芯片尺寸比前代更大，这可能意味着完全产品的良率不高，DaveBauman暗示，因此Geforce 7800GTX可能被屏蔽掉了8条渲染管线，这也是Geforce 7800 Ultra传闻的由来。

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