Do I have a gold graphics card with diamonds on it?
No.
Miners won't care for your card, it consumes too much power for the computing performance.
For a gamer it's quite fine though, and the "better" cards are all "Miner compatible" and therefore in short supply.
Bitcoins are losing value dramatically. Maybe that'll help me in the medium term.
Maybe yes, maybe no.
As long as a new graphics card pays itself from mined crypto currencies within a year, the hype won't stop.
And we're far away from that "break even" point, even taking europe's or germany's high electricity prices into account.
For instance in germany the bitcoin price would have to lose another 3/4 of it's current level until mining with GPUs becomes pointless.
Not to mention other countries. For the chinese it probably would even make sense to proceed when the bitcoin goes down by 99%.
And even then, there are still...
will other crypto currencies be created in the same way?
...just these. Exactly.
They do exist already.
"Clever" miners dedicate a certain amount of their calculating power to "startup" crypto currency projects.
If these new ones (and there are dozens, if not hundreds of them) never turn big, the miners just lose some money from their electricity bill.
If just one of them grows big though, they become millionaires just like those who have mined bitcoins in the first year of it's existence.
And experience has taught us that you never become a rich man just by following the crowd, doing what everyone else does.
Just to really answer your question, the GPU of choice in order to be able to run the game on your current hardware and (I think this would be the next recommended upgrade) on another monitor like WQHD or maybe even 4K, would be the Nvidia 1070Ti.
That card entered the market at a price of about EUR 450.
Under normal conditions, it would to be expected that the card would be about EUR 100 cheaper nowadays, ~ EUR 350.
Actually the card scores prices of EUR 650 and above, tendency: More and more each and every day. If it's available at all, which is not the case. Try yourself. 99% of dealers don't have it on stock and can't tell you when they get one again, regardless what they claim to have on their internet store site.
If you look down (Nvidia 1070, 1060, 1050Ti), things don't get much better and you won't see that much of a performance increase, plus the new card would suck again once you grab a bigger monitor.
If you look up (Nvidia 1080, 1080Ti), things become crazy and 4-digit-prices are what dealers call who still have those cards on stock.
Cheers!
Mike
@Edit:
AMD plz help (I actually am putting faith into some AMD products I've been seeing lately).
Sorry to say but for AMD cards the situation is just worse.
Their "crypto vs. gaming" score is way more extreme than any Nvidia card ever was, this is why certain AMD cards' prices went through the roof way before the big hype on crypto mining even started.
Nvidia cards only became suitable when the bitcoin bubble started to expand in november.