Regards
Prospect
Honestly I have no idea how that could be more profitable right now.. 4 290s right now has gotta set you back like 2000$ with the rest of the mining rig? 2000 $ is a bit over 3 BTC (3.18 right now). Let's say you have 3BTC just for round numbers sake and could get all of your DRK at 0.0015 BTC , that would mean 2000 DRK. How much time does it take for 4 of those cards to generate 2000 DRK ? By the time they are generated will the difficulty have shot up 3 or 4 times ? Seems like a lot of trouble to go through. Now if those cards will be used for other coins after .. maybe it's worthwhile.
edit: just saw the post above mine - so with 4 cards you would get roughly 15 coins/day at current difficulty. which would be 2000/15 = 133 days or 4.44 months to mine 2000 DRK if the difficulty remains the same (which it won't). This coin hasn't even been out for 2 months yet , in 4.44 months who knows where it will be.
Good explanation, but you're also looking at two power supplies, a motherboard, cpu, risers, and a case or crate. Easily another 300-600, pushing your number over half a year. Then figure in about $440 for power usage. It's painful to mine anything right now.