A:AnswerPartially the overclocking... it surely guys up to about 1900. Graphics cards are about a lot more than just the chip or it's speed. Check benchmarks if different brands to decide if it's worth it for you
A:AnswerIt is on their website, occasionally PNY and other manufacturers just change the look of the VGA heatsink, but it's still the same card. Or, it could be they just revised it to a newer revision, but once again, still the same card.
A:AnswerIf you're looking into mining you'd be better off with a 750ti or 1060 graphics card. Nothing wrong with yours but either of those would be considered an upgrade. With that being said (crypto mining wise), the 750ti or 1060 will probably net you around 2-4$ a day. The 435mt/9000 is comparable to the 750ti but a little below it performance wise. You will be able to run it in your rig and see results but nothing too crazy. Couple dollars a day.