ROI only looks good if you assume that your chips are the only ones that get put on line...
If the difficulty levels off somewhat, 500GH will still be profitable for me. It's simply not sustainable for difficulty to continue rising 75% per month. That puts it at 600 million in December. Obviously I'm betting against that. Also, buying the parts myself I've saved a considerable amount on assembly costs.
I'm not really sure what you expect a million chips going on line all around the same (from ONE supplier) time to do, but if you actually believe that they will deliver eventually (and I do), you cannot ignore the fact that difficulty will be AT LEAST a couple hundred million by the end of the year. Scale doesn't matter. ROI is ROI is ROI. Doesn't matter if you bought 16 chips, or 16000 chips. Your return rate still remains exactly the same, relative to difficulty and the hash rate of each individual chip. Unless you're using somebody else's electricity, and using THAT as a way to effectively funnel money out of the electricity bill payer's pocket and into yours, there's no way that your scale affects profitability in any meaningful sense.
As I said before, my hope and belief is that the hardware that has been developed already will still work with minimal reworking with the gen2 chip (and since it uses the same packaging, etc, that's HIGHLY likely).
I like this idea, but it's just too much of a gamble given Avalon's recent track record (will they deliver gen2 chips on time?) and the fact that Bkkcoins already stated he would be hesitant to work on updating his board design for them.
I hope he has a change of heart, as much for his own sake as anybody else's. There's still a LOT of potential with 2gen chips.
If they come to fruition (which they likely will) he'd be a fool not to. I doubt anybody's going to develop anything for 2gen chips until they already have some IN HAND to work with, which should be enough to reassure them that their efforts are worthwhile.
There are, of course, no guarantees when it comes to 2gen chips. But that's why I said we should reevaluate 2gen chips when/if they do come through.
The only sure thing right now is that we've already lost on gen1. That ship has sailed, and is now crashing and burning. We've just been offered a lifeboat in the form of a refund. Some people, it would seem, are hell bent on getting their 'Caribbean Cruise,' even if it means going down with the ship and drowning.
It's not a gamble at all to say "Let's take the lifeboat back to shore, get the refund for our cruise ticket, and see if we can book another cruise. Worst case scenario, you're no worse off than you were before the ship started going down. "But, but, but! There will still be the chance I
might not get my cruise!"
YOU AREN'T GETTING YOUR CRUISE AT ALL, IF YOU STAY ON THIS BOAT! You MIGHT get your cruise if you come, you might not. The only SURE way to lose is to stay on the boat. If you take the lifeboat, worst case scenario, you are back where you started, with a bundle of bitcoin in your pocket.
The gamble is staying on board, in spite of all evidence that it's going down, based on the delusional belief that since YOU have a FIRST CLASS ticket, YOU are sure to get the carribean cruise you paid for... (But you can 'totally understand why the 'coach' passengers might want to take the lifeboat back to shore)...