Hi, my name's Gianluca from Italy. I can't speak Spanish so I use English. Sorry for this.
I have same hardware of yours, Xeon X5670 and Rampage III Extreme, latest official bios.
About ram, I have ADATA DDR3 XPG Gaming, that can do officially 2000Mhz CL9.
My simple (and incredible problem) is that I can't set memory even to 1600Mhz. At 1333Mhz everything is ok. As I wrote, they can do even 2000Mhz CL9. But to be safe and slowly rise, I just set them to 1600Mhz and system does not boot. Cpu LED starts blinking...
(Switching back to my I7-950 everything is ok and memory is set to 1866Mhz CL9)
Everything is at default/auto in the bios. I really can't figure it out. It's really crazy.
Can you give me some suggestions about mistakes I'm (sure) doing?
Thanks anyway.