Single 280X card is stable at around 7mh/s.
Raped by super fast miner + the pools(nonce-pool already there,suprnova is on the way),SPR is quite likely to die at the infant bed.
Where I can download 7 MH/s SpreadX11 miner for 280x?
Don't be stupid.
Dev has spent so much time and energy on it. Do you think they will share it for free ?

And do you think the miner buyers are not going to dump spr for the btc they spent ?
So ,the rich get richer.
calm down,no complaint,if you happen to be the poor.

How do you know there is a miner with 7mh/s for a 280X? Do you have proof?
From various posts, I guess there is a private miner by wolf0 about 3-4mh/s for a R9 290X, a private miner for nvidia which gives about 5mh/s for a GTX970 instead of 4mh/s for the public one.
Never heard of a 8Mh/s.
Private miners exists for almost all algos :
http://da-data.blogspot.fr/2014/08/minting-money-with-monero-and-cpu.htmlThere was better private miners for almost all algos : after a while, people finish to know about them, and after sometime, they leaks and became public.
At present,AFAIK there are at least 3 optimized miners in the market. Wolf0 version is the earliest but the slowest , compared with the other 2.