edit: Just FYI, there's a few guys getting speeds like that, but there's also some debate that what they're seeing is mostly the onboard controller's cache speed, not true drive throughput.
Why do you need such outrageous performance? You'll have to look carefully at your motherboard diagram; ICH* chipsets often connect with a DMI bus that runs at 2 GB/s, which could be a limiting factor. A software raid controller hanging off an x8 slot on the Northbridge is your best bet for a single-card solution, I think.
yeah see i have a 1680ix- 8 port that is getting around 920 and i cant seem to get over that hump....what kind of settings are you using if you dont mind? any input would be appreciated!