What kind of CPU are you using? Cause it might be faster than that old Quadro 600. I have an old AMD APU lying around that's ten times faster than this. Seriously, don't waste any time with that piece of crap. Old driver, old hashcat, and in the end you get the most shitty performance for a few hours fiddeling around?
Sell the Quadro and get a used GTX960. It will be one hundred times faster. Literally. It's from a different era. In it's time the GTX480 was five times faster. Then came the GTX580, followed by GTX680, GTX780, GTX980, GTX1080. That's how old it is.
Sell the Quadro and get a used GTX960. It will be one hundred times faster. Literally. It's from a different era. In it's time the GTX480 was five times faster. Then came the GTX580, followed by GTX680, GTX780, GTX980, GTX1080. That's how old it is.