I'm confused about the difference between the Ripjaw V series and the Trident Z series. The voltages are generally the same for a given speed. The Tridents seem to top out a little higher in speed, but in the middle of the range (say, DDR4-3000), they offer both Ripjaw V and Trident Z kits with the same timings, same voltages, etc. Is it just the heatspreader that's different?