Noted. From an investment point LTC mining is still not of significance. Owning 50% of a 4% market is still less than owning 10% of the full market. Additionally, albeit the existence of alternative digital currencies is an important aspect of the whole ecosystem, LTC just doesn't have the same market penetration as btc, which raises the question whether a 4% market cap is already bubble territory, especially since the money supply is really 4-fold in LTC, not the 2:1 relationship now.
This is IMHO not a valid point. when ASICMINER started fundraising the BTC was 12$/BTC while LTC is 30$/LTC. What important is, is the question if there are enought miner for LTC at the current and/or future price level. The problem is that an external DDR3 interface seems a matter of price. I am not really sure about internal RAM, maybe with 1T SRAM or eDRAM if this would be less expensive.
), they should be cheaper, faster and smaller than currently used NANDs or whatever it is in RAM generally