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Monthly Archives: April 2009
X200的硬盘接口是SATA 1.5Gb/s还是SATA 3Gb/s
今天升级了驱动。在Intel Matrix Storage Console中看到笔记本(ThinkPad X200)硬盘(Seagate Momentus 5400.4 ST9160827AS) 运行在“SATA第一代” (Generation 1)传输模式,NCQ支持却是Yes。印象中不是只有“SATA第二代”才支持NCQ吗?觉得奇怪,便用其他软件看了看。 HWiNFO32显示Drive Controller为Serial ATA 1.5Gb/s。 EVEREST Corporate Edition显示Device Type为SATA,但ATA Device Physical Info中的Interface却又是SATA-II。 到底是SATA I还是SATA II?Seagate网站明确说明这款硬盘接口为SATA 3.0Gb/s。Product manual PDF文档又说突发传输速率最高是150MB/s,自相矛盾。 干脆拆下硬盘。表签上白底黑字写着1.5 Gb/sec。 我想起Seagate曾经在支持SATA 3Gb/s的硬盘上默认设置跳线,将传输速率限制在1.5Gb/s,以免在不支持3Gb/s的主机不兼容。 这块硬盘上果然也有个跳线。移除跳线后开机。所有软件都显示硬盘运行在SATA II传输模式。 以下是两种传输模式的对比。 HD Tach测试表明,突发传输速率大幅提高,超过了150MB/s。但平均传输速率不变。 HD Tune也显示突发传输速率增大,平均传输速率不变。 … Continue reading
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