yeah my 590 sli sets them to 5-5-5-15-2t until i change them as well. as ste says, below 800mhz (mine will go to about 760) you can set the timings for 4-3-3-10 (or 8) 1T. anything over that you will have to raise the timings to 5 timings or command rate to 2T. with your rig, if you are concerned about benchmark performance and are overclocking, you will want to raise (or leave lol) the timings at 5-5-5-15-2T and clock them as high as possible (you should reach about 1060mhz with 2.2-2.3V.
the ones you need to change out of the 10 to get the SPD settings are the ones listed in your cpu-z screenie:
cas latency: 4
ras to cas : 4
ras precharge (may be listed as ras pchg): 4
Tras: 12
and if you can,
Trc:36
now, my mobo will not allow me to raise the trc that high, which may be the reason i can only get about 1070mhz out of my HZ's.
good luck!