It's almost amazing how this isn't more common but, in order to use its new
320 GB platters to the fullest,
Western Digital has now released a 640 GB hard drive. The new 3.5-inch hard
drive utilizes two 320 GB platters that feature PMR (perpendicular magnetic
recording) technology and comes with Native Command Queuing (NCQ), a SATA 3.0
Gbps interface and works at 7,200 rpm. Considering how quiet other Caviar SE16
drives are, that certainly bodes well. The high-density platters should also
make for excellent performance - likely better than in the two-platter 500GB
SE16. The 640GB Caviar SE16 is launching with a recommended price tag of
$139.99, and it's already listed at Newegg and Buy.com, although neither
e-tailer has it in stock.