That's hard to tell. Personally i only buy reference design cards with radial fans and always from the top end of the spectrum. Since all these cards are basically the same at any vendor, I don't care much about the brand.
But usually EVGA has above average support than others.
If either one or two fans are enough is hard to tell, since none of these cards are built for the stress that hash cracking will put on them. These are consumer cards for gaming, made for short burts of high load levels. Hash cracking might stress them at full load for hours and that could let cards with unsufficient cooling throttle, which costs performance or is overheating parts of the card. More important than the number of fans is the underlying heat sink. Does it cover the memory or the VRM?
All of that makes it a blind guess for me to tell you which card you should buy.
I guess you'd be safe with this one, but then it blows you budget completely:
https://www.newegg.com/Product/Product.a...6814127948
But usually EVGA has above average support than others.
If either one or two fans are enough is hard to tell, since none of these cards are built for the stress that hash cracking will put on them. These are consumer cards for gaming, made for short burts of high load levels. Hash cracking might stress them at full load for hours and that could let cards with unsufficient cooling throttle, which costs performance or is overheating parts of the card. More important than the number of fans is the underlying heat sink. Does it cover the memory or the VRM?
All of that makes it a blind guess for me to tell you which card you should buy.
I guess you'd be safe with this one, but then it blows you budget completely:
https://www.newegg.com/Product/Product.a...6814127948