Earlier this year we took a look at our first Viper 4 DDR4 memory kit from Patriot. That kit was a quad-channel kit designed for the X99 platform. Now that Intel's Z170 chipset is here we have dual-channel DDR4 which we?ve seen to be more stable at higher frequencies. Patriot has sent us one of their latest Viper 4 DDR4 kits which is an 8GB dual-channel kit that runs at 3400 MHz! With official timings of 16-18-18-36 at 1.35V the PV48G340C6K kit is set to perform quite well on Z170 systems. On top of the fast speeds the memory kit features a custom-designed heatspreader that is black and red that will match many popular motherboards out there. Let's get this memory installed and see what it can do!