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一、Intel技术回顾 2M L3缓存技术 Intel在IDF2003上发布了Pentium4(以下简称P4)ExtremeEdition。11月正式上市时被更名为P4XE,中文名称为“P4至尊”。作为P4的终极版本,P4XE采用0.13微米工艺制造,主频率为3.2G,支持HT,值得注意的是P4XE加入了2M三级缓存技术。在频率提升困难的情况下,增加缓存的容量是提高性能的捷径。特别是P4的超长流水线结构,缓存容量的增加可以减少分支预测失败后造成的效率损失。但是大容量缓存的弊端也很明显;发热量,功耗增大,对散热要求提高。
First, Intel technology review 2M L3 cache technology Intel released the Pentium4 (hereinafter referred to as P4) ExtremeEdition on IDF2003. When officially listed in November was renamed P4XE, the Chinese name for the “P4 Extreme.” As the ultimate version of P4, P4XE 0.13-micron technology, the main frequency of 3.2G, support for HT, it is noteworthy that P4XE joined the 2M L3 cache technology. In the case of difficult frequency increases, increasing the capacity of the cache is a shortcut to improve performance. In particular, P4’s long pipeline structure increases the cache capacity to reduce the efficiency loss caused by the failure of branch prediction. However, the drawbacks of large-capacity cache is also obvious; heat, power consumption increases, the cooling requirements increase.