measures the WD800BB's access time
at 13.3 milliseconds. Subtracting the standard 4.2 milliseconds of rotational latency
yields a measured seek time
of 9.1 milliseconds. Though this is still a hair off of WD's claimed 8.9 ms spec, we should note that this represents a significant reduction from WD400BB
's score... this despite increased density
and an extra platter
Despite its high density, the 800BB's outer-zone transfer rate tops out at just 34.9 MB/sec. This figure is lower than all 20 gig/platter drives save WD's own. To the drive's credit, however, it maintains transfer rates above 34 MB/sec over more than half of its capacity, all the way to the 42 gig point. Inner-track rates finish at a respectable 24.1 MB/sec.