Yeah thanks for the fast delivery. Unfortunately, the 4 new cards brought more troubles than hashes: i was happily hashing along with 8 cards, getting about 260GH/s but now with 12 cards, i'm riddled with miso and spi errors, and i still get only 260GH/s. I can get the setup to run @ 350 for a while, but then something happens and errors galore.
I've tried switching the cards around and that did help initially (initially i thought two of the new cards were duds), but that didn't last long. The funny thing is that now the cards that were running without problems have started to act up... i even had two slots die on me, i couldn't get any card to show up in those. But after some restarts and card switcheroo, they are alive again. Heh, i knew that these aren't the easiest to get running, but this something else.
Oh well, back to tweaking...