固态硬盘（SSD） 和机 械硬盘（HDD） 优缺点比较

Attribute

SSD (Solid State Drive)

HDD (Hard Disk Drive)

Power Draw / Battery Life

（功耗/电池寿命）

Less power draw, averages 2 – 3 watts, resulting in 30+ minute battery boost√

(更少的功耗，平均为2–3瓦，导致30分钟的电池升压)

More power draw, averages 6 – 7 watts and therefore uses more battery

(更多的电力消耗，平均为6–7瓦，因此使用更多的电池)

Cost

（成本）

Expensive, roughly $0.50 per gigabyte (based on buying a 1TB drive)

(昂贵的，大约0.50美元每千兆字节（基于购买一个1TB的硬盘）)

Only around $0.15 per gigabyte, very cheap (buying a 4TB model)√

(只有0.15元左右，技嘉，很便宜（买4TB模型）)

Capacity

（容量能力）

Typically not larger than 512GB for notebook size drives; 1TB max for desktops(笔记本一般不大于512GB ,台式机驱动最大为1TB)

Typically around 500GB and 2TB maximum for notebook size drives; 4TB max for desktops√

(笔记本驱动大小通常在500GB和2TB之间 ，台式机驱动最大为4TB)

Operating System Boot Time

（启动时间）

Around 22 seconds average bootup time√

(启动时间在平均22秒左右)

Around 40 seconds average bootup time

(启动时间在平均40秒左右)

Noise

（是否有噪声）

There are no moving parts and as such no sound√

(有没有移动部件，因此没有声音)

Audible clicks and spinning can be heard

(发声的点击和旋转可以听到)

Vibration

（是否有振动）

No vibration as there are no moving parts√

(无振动，没有移动部件)

The spinning of the platters can sometimes result in vibration

(的盘片旋转有时会导致振动)

Heat Produced

（热量产生情况）

Lower power draw and no moving parts so little heat is produced√

(低功耗、无运动部件很少的热量产生)

HDD doesn’t produce much heat, but it will have a measurable amount more heat than an SSD due to moving parts and higher power draw

(硬盘不产生大量的热，但会有一个可衡量的数量比由于运动部件和高功率画一个SSD更热)

Failure Rate

（故障率）

Mean time between failure rate of 2.0 million hours√

(平均故障率时间约为2000000小时)

Mean time between failure rate of 1.5 million hours(平均故障率时间约为1500000小时)

File Copy / Write Speed

（文件复制/写速度）

Generally above 200 MB/s and up to 550 MB/s for cutting edge drives√

(刀刃驱动器一般在200 Mb / s和550 MB / s)

The range can be anywhere from 50 – 120MB / s

(范围可以从50–120MB／s)

Encryption

(支持加密情况)

Full Disk Encryption (FDE) Supported on some models√

(支持一些模型全磁盘加密（FDE）)

Full Disk Encryption (FDE) Supported on some models√

(支持一些模型全磁盘加密（FDE）)

File Opening Speed

（读取文件速度）

Up to 30% faster than HDD√

(打开文件速度比HDD快高达30%)

Slower than SSD

(比SSD慢)

Magnetism Affected?

（与有磁性物体摩擦是否有影响）

An SSD is safe from any effects of magnetism√

(与磁性物体摩擦对SSD上存储的数据没有任何影响)

Magnets can erase data

(与磁性物体摩擦会导致数据丢失)