Western Digital's Velociraptor WD3000HLFS drive is a calculated riposte to SSDs, constituting a ground-up reworking of the Raptor drives that have sat pretty at the top of the HDD pile for years now.
It's actually a 2.5-inch drive – that's still too tall for notebooks - plopped into a removable 3.5-inch frame/heatsink, which means lower capacities (150 or 300GB are the only options) but faster access times.
Its peak read times aren't far behind the Intel X25, though you can see the difference in the TF2 loading, but it canes the X25 for write times – comfortably the fastest drive in our real-world 9GB file copy test.
Of course, it's not silent like the X25, but the pricetag isn't as silly. If you're in the market for a new drive, and have an extra £100, it's a worthwile upgrade.