I installed Win 7 Ult fresh on a Vertex 3 SSD/Sata III connection (only getting about 375mb/s over the rated 500..probably cause of my controller on the mobo)...
but windows 7, Steam, and CLOD are all on the SSD.
No stutters. never seen a stutter.
now if we can get SLI working I can use the remaining 3 cores of my cards