Years of experience with manufacturing processes, specifically new process development, force me to double if not triple every number that that guy said . . assuming he's telling the truth.
So that's a few months x 2.5, 50k development x 2.5 (probably more, but sticking with consistency), 300M# x 2.5, 2k x 2.5 seems more reasonable to me.
If that few months x 2.5 is even close to a year then that's not nearly as bad.
Plus getting that kind of hash out of my GPU's would easily cost me above $50k in just computer parts . . so in comparison thats a far cry more reasonable than the scrypt asic field.
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So he has actually no idea if those numbers are real, and frankly, while I am no expert either, they seem quite unrealistic to me.
A 300 MH/S scrypt asic goes for ~$2,500, so there is no way an X11 could go for the same price.
Additionally, at the moment, the market cap of scrypt coins is about 250 times greater than X11 coins. Even if the $50,000 development cost number was correct, that is 3% of the current market cap! That is an insanely high risk to reward ratio for a company to take.
tl;dr: I'm not expecting an X11 asic anytime soon. Whether it is good or bad is a whole other debate.
He's talking about FPGA with chips ("6 Spartan 6 LX150") that are on the market, not ASICs. ASICs are a different issue.