Take off the Heatsink.
What color is the card? Often, brown = Asus, blue = Hercules, red = Gigabyte, green = several others. That's a long shot but could be a hint. Companies usually engrave the name of their card on the same side of the GPU (for instance, upper right corner on my blue Hercules card).
<font color=red>Floppy disk?!? What the heck's a floppy disk?!?</font color=red>