Higher overall performance than 15k HDDs based on random IOPs, sustained reads and sustained writes
Lower systems level acoustical emissions than systems with HDDs, especially 15k rpm HDDs
More rugged than HDDs with respect to shock and vibration
Typical wall power savings relative to a 15k drive is ~10W/drive (based on drive idle power and power supply at 85% efficiency. Active drive power deltas are slightly larger.)
 For storage drives, GB = 1 billion bytes. Actual formatted capacity is less.