I have heard that people have issues with OCZ RAM in Gigabyte X58 mobos. Is that true? I could buy much faster OCZs or slower Corsairs.

Would you recommend 6 GB / 1600 Mhz / 1.65V RAM from OCZ for running 920 D0 at 3.6-4.0 Ghz? Is it worth buying 1600 Mhz ram for OC-ed 920, or I would be better with a faster 1333 Mhz one?