G.Skill Eco C7 modules will easily hit 1900mhz, most will go to 2000mhz at decent timings - 8-9-8 1T. Low voltage sticks too - 1.6vddr is all youll need. You could get 12gb of that for the same price as 6gb hyper. If your target is up to 2000mhz you really dont need hypers.