Testing the Plextor SSD and 1TB data drive confirmed what I could feel through my fingertips, which is that the SSD is very fast and the hard drive is no slouch either. Once again I emphasise that retail Pegasus laptops are expected to ship with a Corsair SSD but that shouldn't affect the performance to any great extent.
Testing the USB 3.0 sub-system didn't go entirely to plan. My Asus Express Box hard drive pushed performance over 100MB/sec however that is a drop in the ocean for USB 3.0.
I switched to a 4TB G-Drive (Hitachi desktop drive in a USB 3.0 caddy) and saw the performance increase to 170MB/sec. It is a crying shame I didn't have a USB 3.0 Solid State Drive to hand to see whether I could get above 300MB/sec but on the plus side the barebones installation of Windows 8.1 meant the testing software ran without a hitch.
It was clear from my benchmark testing that the DinoPC Pegasus 17.3” GTX 765M performed exactly as well as the specification suggested.