With 50 of these boards you could get up to 1.2 TH/s hashrate which does not sound bad at all, if the price is right, however you would need 6500W of power so in terms of performance per watt the Biostar BTC-24GH wont be interesting at all. As weve already said: too little, too late .
If these are cheap people with free power could stand to win. Otherwise, I hope Biostar didn't mass produce these.