What is wrong with my Raptor?

http://img24.imageshack.us/img24/233...rkwdcwd150.png

Something has gone terribly wrong here. I've scanned the drive, it doesn't appear to have bad sectors. During those very, very low points in the graph the poor thing is thrashing around like, well, a Raptor in a small cage. It sounds horrible.

I've been planning on getting a pair of intel X25-M drives for awhile now, but no one really has any in stock. I might just have to get an X-series Corsair drive because something is definitely, definitely wrong here.

How's the fragmentation?

Really the only way to truly benchmark a drive is when it's totally clean, fresh partition.

Just defragged it before the test.

Try getting a bootable drive benchmark program, something outside Windows. Any number of services or apps or swapping could kill a benchmark.