And to expand on what MeanMachine has correctly explained, there is also the fact that there technically IS NO "right" set of timings for your platform. If you get slower RAM with high or loose timings, then you'll tend towards somewhat lower performance, even if only on benchmarks.
If you get faster memory with lower/tighter timings, then you can expect performance to gravitate the other way. There is no "right", when it comes to seeking specific timings before purchasing. Your system could work fine with anything from 2133mhz sticks with 15-15-15-35 to 3200mhz sticks with 14-14-14-28 timings, or anything in between, or even much looser timings in the CAS 16-18 range.
Since you have an unlocked board and CPU, there are few limitations on what you can go with, unlike the lower end budget chipsets that may be limited to anywhere from 2133-2666mhz modules. Timings however are rarely, if ever, limited by chipset or CPU, so long as they are not your own custom settings in which case there are never any guarantees at all and results will be based on a lot of trial and error.