Fast, but talk about price gouging at $1 GB you'd be much much better off buying more ram for a ram disk or volume cache on a USB or cheap SATA SSD flash drive.
I can get more performance from a USB 2.0 flash drive with software volume caching so that's a bit pathetic and w/o using a abundance of system ram to do so you can get by with 512MB of memory for software partition caching for blistering performance that smokes that. I don't get why Tom's Hardware never does articles on that. I knew the direction SSD's were trending in long before they ever did software caching faster physical interfaces and more on board cache.
It's really sad my USB 2.0 flash drive and software cache is faster than the fastest physical SSD on the market though. Enough with PCIe x4 and x8 quit gouging and bring on PCIe x16 SSD's anything else is too slow.
In fact what we should have VGA speed enhanced SSD's and ram disk's, but the industry is slow to adopt and wants to price gouge. Video card's have the highest bandwidth of any components in a PC by a long shot there is no reason we can't have them accelerate HD speeds by leaps and bounds.