Harry Krause

Just for grins, I popped a a halfagig SD card I had around into a card
reader and it was accepted as ReadyBoost memory.

So, I'm wondering...

If I want to add about two gigs of ReadyBoost memory, should I be
shopping for a fast SD card or a fast USB memory key, or does it matter?

And what is fast? And how fast is fast enough? Very few manufacturers of
these memory devices seem to publish specs.

Thanks.