[M] Ballistix Sport LT Red 32GB 2666MHz DDR4 Memory Kit Review
 

The Sport LT 2666 32GB DDR4 kit from Ballistix can be easily overclocked in order to squeeze even more performance out of the system. With this particular model, while working a bit with the timings and voltage, we were able to reach even 3200MHz, which is a big step from their stock frequency. Surprisingly, even with the voltage at 1.35V (they are intended to run at 1.2V at the recommended speed of 2666Mhz) and a half an hour of Memtest, the modules barely became warm so the heatspreaders are doing a really great job cooling the ICs.

http://www.madshrimps.be/articles/article/1000972/