What are the main differences between SSDs and HDDs in speed, durability, and power usage?

What are the main differences between SSDs and HDDs in speed, durability, and power usage?

• A. SSDs have no moving parts and are much faster; more durable to shocks; lower power consumption.
• B. SSDs spin disks and are slower.
• C. HDDs have no moving parts.
• D. SSDs are cheaper per GB.

Answer: (D)

SSDs and HDDs differ mainly in how data is stored and accessed. SSDs use flash memory with no moving parts, while HDDs rely on spinning disks and a read/write head. That difference drives speed: SSDs offer near-instant access and high IOPS, so booting the system and loading programs happens much faster. Durability is higher with SSDs because there’s nothing delicate like spinning platters or moving heads that can be jolted out of position. Power usage is lower for SSDs since there’s no motor spinning disks, reducing overall energy use. HDDs, with their rotating disks, suffer from rotational latency and mechanical seek times, which slows access and increases energy consumption. They’re also more vulnerable to damage from shocks that can affect the moving parts. Regarding cost, SSDs typically cost more per gigabyte than HDDs, so the statement that SSDs are cheaper per GB isn’t generally true.

SSDs and HDDs differ mainly in how data is stored and accessed. SSDs use flash memory with no moving parts, while HDDs rely on spinning disks and a read/write head. That difference drives speed: SSDs offer near-instant access and high IOPS, so booting the system and loading programs happens much faster. Durability is higher with SSDs because there’s nothing delicate like spinning platters or moving heads that can be jolted out of position. Power usage is lower for SSDs since there’s no motor spinning disks, reducing overall energy use.

HDDs, with their rotating disks, suffer from rotational latency and mechanical seek times, which slows access and increases energy consumption. They’re also more vulnerable to damage from shocks that can affect the moving parts. Regarding cost, SSDs typically cost more per gigabyte than HDDs, so the statement that SSDs are cheaper per GB isn’t generally true.