Intel'sNehalem architecture went mainstream with the release of the Core i5/i7 just a few short months ago. Not only did the socket change from 1366 pins to 1156 pins, but the memory requirements changed as well, with triple channel memory being dropped from the socket 1156 line up. This leaves you with a dual or single channel configuration as your only options. Of course, performance is enhanced when running in dual channel mode. Even though the amount of channels was reduced, the voltage requirement of 1.65 volts is the same required for the socket 1366 processors. In the past, we had been used to DDR3 modules requiring 1.9 volts and higher for insane speeds and timings. The Intel specification put the kibosh on that and the memory manufacturers responded with sets that now do this with voltages that were unheard of last year. To this end, Patriot has put together the Viper II series Sector 5 modules that are designed to be run on the Intel Core i5 platform at 2000MHz with relatively tight 8-8-8-24 timings, all while using only 1.65 volts to achieve that goal. The Viper II series heatsinkis noticeably different than the AOC design used on the Viper Series of Patriot modules. How this will impact cooling and ultimately performance is something I will have to explore.