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标明频率的应该就关了turbo,另外turbo在intel白皮书上是这么说的,如果单核满载,其余3核空闲,那么就超到 3.46Ghz,如果4核心满载,那么基本上就是不超。。。这是考虑到散热性能的设计
xeon-pan 发表于 2009-9-27 09:14 ![]() 这个说法的确也听说过,不过bit-tech的评测显示实际的设定跟这个描述有明显的出入。
http://www.bit-tech.net/hardware/cpus/2009/09/08/intel-core-i5-and-i7-lynnfield-cpu-review/2
However, these numbers only tell half the story. This is because Turbo Boost (rev 2) is configured slightly differently on each of the three CPUs: the more expensive the model, the more time it will spend at its maximum Turbo Boost (rev 2) frequency. For example, the 2.8GHz i7-870 always ran at between 3.2GHz and 3.46GHz no matter which stressful benchmark we ran, while the 2.66GHz i5-750 rarely ramped up to 3.2GHz. |
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