True. I'm almost certain the only difference between Quadro and GeForce back then was BIOS Identifier and driver features anyway! Certainly at Geforce 2/3/4 era, softmodding to Quadro was rampant!Probably, and back in those days probably less common for people to take coolers off (and notice such things)
It does transpire that this card has 166MHz RAM, whilst it is only clocked to 150MHz, so there should be some headway for a touch of overclocking with standard voltage.