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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)

固态硬盘(SSD) 和机 械硬盘(HDD) 优缺点比较