The Patriot G2 Series DDR3-1600MHz 4GB are rated to run at 9-9-9-24 timings @ 1.65v. We had no problems running our set at 8-8-8-24 @ 1.65v. We also were able to almost run at 1.5v with the rated timings. The Patriot G2 Series DDR3-1600MHz 4GB are P67 platform and XMP ready for a quick setup. Since Sandybridge doesn't allow for the more traditional memory overclock, we were hoping that perhaps with looser timings and some more voltage we could run the Patriot G2 Series DDR3-1600MHz 4GB @ 1866MHz, the next step for Sandybridge memory speeds. Alas we couldn't quite get there. Still, the tighter timings and the lower than rated voltage were a welcome surprise, but of course you can only guarantee you'll get the rated specifications when purchasing your own set.