"The F3-17066CL7D-4GBXH is a PC3-17066 kit which translates to 2133MHz DDR. As you may have guessed from the naming, it's a 4GB kit. What makes it really stand out is the timings, though, at these speeds.
Out of the packet we've got a 7-10-7-27-1T @ 1.65v setup which is more aggressive than other P67 kits we've looked at, but with slightly more voltage as well. Saying that, 1.65v isn't a worrying number at all, as it's what we've been used to seeing over the last few years with high performance DDR3 memory kits."