is it true you still have that tool the tool was once highly sought after by people to mine bitcoin. in fact, it was very difficult to get the tool at that time. It was a memory.
you could buy them at slush's pool iirc. they were not really that profitable, they were more for fun and learning. i remember having several plugged into a usb hub running -ck's cgminer back then. still have a couple.
one of those was about equal to my ATI HD6870, something like 300 mh/s. but at like 2 watts instead of 150ish watts.