While faster spindle speeds are a brute-force approach to reducing rotational latency, Native Command Queuing is a more cerebral and ultimately less expensive alternative. Instead of blindly executing IO requests on a first-come, first-serve basis, NCQ allows a hard drive to intelligently reorder multiple requests based on their proximity to the drive head's position..The full article can be read at The Tech Report
What's Native Command Queuing (NCQ)?

The Tech Report takes a look at Native Command Queuing (NCQ) and what it can do to improve computer performance.