one fpga mining x11 equal 10 card 280x  speed,
but one fpga mining script only equal one 7850 card speed.
use fpga mining x11 coin can get a very high speed than gpu miner,that's why gpu miner can't get a good profitability for mining x11,because x11 net hash has many many fpga speed.
someone why know fpga,i think you know x11 can be very easy design by fpga,and if one fpga worth 100usd,the gpu miner at least use 1000usd video card can get a equal speed for fpga

yeah,many many fpga mining x11

sometimes mine x11 coin has very low profitability by gpu miner,but it also has very high net hash

 

but like script-n or script- jane is not easy to use fpga or asic to mine at this time.
only x11 are very easy to use fpga mining at this time.
because x11 has been cracked by many people

i am a china miner, i can tell all of you,many peopel use fgpa mining X11 coin in china.
that's why gpu miner can't get a good profitability for mining X11 coin.
the X11 COIN can't prevent fpga or asic.
X11 has been cracked by fpga at this time.
so it's not fair for gpu miner.
we must ban x11 coin

new update:
x11 coin can be mined by  Scrypt ASIC at this time.that's same to maxcoin.maxcon can be mined by AntMiner

many fpge or Scrypt ASIC are mining x11,not gpu miner,for example DARKCOIN,28G NET HASH are very hard to believe

same option
https://bitcointalk.org/index.php?topic=602444.0