TrustedReviews have looked at the Kingston 1GB DataTraveler ReadyFlash

So, what is ReadyBoost you ask? It acts as an extension of Vista’s SuperFetch feature, which loads frequently used files and programs into the system memory so that they load significantly faster than if they loaded directly from the hard drive. As a result Vista is far better at utilising large memory configurations in excess of 2GB, and power users will certainly reap the benefits.

Kingston 1GB DataTraveler ReadyFlash