It is showing as DDR3 1066, as that is what the memory defaults to at 1.5V (default MOBO DRAM Voltage). You will need to either enable XMP in the BIOS and see if auto-detects correct settings (Page 44 of Manual) or manual adjust your MHz, Timings and Voltage to match the RAM specifications.
1) Reviewing the specification from Corsair, it shows XMP so it should be supported. I'm not really sure why the feature isn't showing in your BIOS. Never the less, as I've never been the biggest fan of XMP versus manual adjustment.
2) Well, you are running DDR3 1066 at Cas7 1.5V and your RAM is rated for DDR3 1333 Cas8 1.65V. You won't see much of a performance difference between the two (if any), but I would recommend running at specified specs: DDR3 1333, 1.65V & 8-8-8-24. This will be your most stable setup... IMO.