Yo, OP here.
For USB 3.0 and SATA 6Gb/s, they may have started coming out, but on which boards? On none that i know of...
except some Gigabyte P55 boards, and i just had a look at them, they have 2 SATA 6Gb/s and 6 SATA 3Gb/s and 2 USB 3.0 connections and 6 or 8 USB 2.0 connections...
thats not exactly standard, is it? :s
But doesn't the ATI 5970 saturate the PCI-E 2.0 slot just a little? it said so in its review on Tom's, i believe... as Two 5870's in Crossfire surpassed the 5970 a little as each 5870 had a full 16 lanes each, wheres the 5970 had to share...