You can see that getting your RAM latency around 64ns will have it match a 9900K pretty nicely. In the 1% frame rates, it actually beats it.
For the incredibly lazy (you know who you are), I have attached a screenshot that summarizes all of the results.
I understand that it's not all about latency, so this is just an estimate. For every 1ns you can drop in your latency, you may gain about 0.88% in performance. Of course, this may vary by application. You might get 1.5% in one game or 0% in another game.