Digital Home Thoughts: Testing Hard Drive and Memory Card Speed

I'm doing some speed tests on a few different brands of 512 MB Secure Digital cards, and I needed to come up with a good way of testing them. I discovered a tool last year called HD_Speed, and it does exactly what you think: it allows you to test both reading and writing speeds of any drive attached to the system: hard drives, optical drives, and flash memory cards. The developer was even kind enough to alter the program for me to add a new feature that would make my testing even easier. If you're a stats junkie, download this app - and, even better, it's free! Look under the "Disk Utils" section to grab it.