内存通常比磁盘快多少? [英] How much faster is the memory usually than the disk?
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问题描述
IDE，SCSI，SSD，SATA或所有这些.
IDE,SCSI,SSD,SATA or all of those.
推荐答案
I'm surprised: Figure 3 in the middle of this article, The Pathologies of Big Data, says that memory is only about 6 times faster when you're doing sequential access (350 Mvalues/sec for memory compared with 58 Mvalues/sec for disk); but it's about 100,000 times faster when you're doing random access.
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