Looks like Bittware reduced their standard warranty for the "crypto" models. I believe they typically have 1 yr mfg warranty on their products. Kind of disappointing the warranty was reduced that much for a $6k product.
Yes, a 90-day warranty raises a LOT of concerns. Has Bittware done stress testing and has some reason to believe the failure rate ramps up after that timeframe? I could understand a 90-day warranty on support issues with a 1-year hardware warranty.
I was in the process of arranging my finances to purchase a few cards, but if the manufacturer has that little confidence in their product, they're sending me a message I can't ignore. Even the Chinese manufacturers (with their notorious quality) give 180-day warranties.