SSD Vs HDD Comparison
|
Attribute
|
SSD (Solid State Drive)
|
HDD (Hard Disk Drive)
|
|
Power Draw / Battery Life
|
Less power draw, averages 2 – 3
watts, resulting in 30+ minute battery boost
|
More power draw, averages 6 – 7
watts and therefore uses more battery
|
|
Cost
|
Expensive, $1.00 per gigabyte
(based on buying a 240GB drive)
|
Only around $0.075 per gigabyte,
very cheap (buying a 4TB model)
|
|
Capacity
|
Typically not larger than 512GB
for notebook size drives
|
Typically 500GB – 2TB for
notebook size drives
|
|
Operating System Boot Time
|
Around 22 seconds average bootup
time
|
Around 40 seconds average bootup
time
|
|
Noise
|
There are no moving parts and as
such no sound
|
Audible clicks and spinning can
be heard
|
|
Vibration
|
No vibration as there are no
moving parts
|
The spinning of the platters can
sometimes result in vibration
|
|
Heat Produced
|
Lower power draw and no moving
parts so little heat is produced
|
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
|
|
Failure Rate
|
Mean time between failure rate
of 2.0 million hours
|
Mean time between failure rate
of 1.5 million hours
|
|
File Copy / Write Speed
|
Generally above 200 MB/s and up
to 500 MB/s for cutting edge drives
|
The range can be anywhere from
50 – 120MB / s
|
|
Encryption
|
Full Disk Encryption (FDE) Supported
on some models
|
Full Disk Encryption (FDE)
Supported on some models
|
|
File Opening Speed
|
Up to 30% faster than HDD
|
Slower than SSD
|
|
Magnetism Affected?
|
An SSD is safe from any effects
of magnetism
|
Magnets can erase data
|
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