Litecoin mining: 1 R9 280X vs 2 HD7870

2 hd 7870s will hash better... the sweet spot for coin mining has always been the 7950 though... on an electricity/hash rate/price spectrum anyway.

right now it's looking like the r9-290 might be the best hash/price/electricity use card around though...
 

Almosery

Honorable
Dec 23, 2013
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I don't see a significant difference in hashspeed... So, how do you know it will "hash better"?
The r9-290 is more expensive. How do you know it has the best hash/price/electricity ratio?