I went from 32gb's of 1600mhz to 32gb's of 2133mhz kingston beast ram, i was able to overclock it a little further to 2200mhz(ish) (using the divider from fsb overclocking on the sabertooth r2 board).. stable after a mem test so all is good.
I haven't done any fps tests but I did do aida64 ones and there was a fairly big boost to the ram read/write/copy speeds.
My excuse was I was building a machine for my brother so I gave him my old ram kits and bought the new shiny shiny fast ram for myself...
If I hadn't been building a machine for my brother then I don't think I would have spent all that money on what is best a couple of percentage increase in performance.
If you are trying to squeeze extra performance out of your machine the ram should be the last thing on your list as it is the most expense for the least gain.
Because I value storage space over Mbps. That and I do own an ssd, I stuck it in my server so it would boot faster. Besides, who needs an ssd when you have enough ram to load the entire game directory into ram and cut down load times better then any ssd could ever dream of.
Sorry, but upgrading the RAM is a complete waste of money.
I have the same MOBO, and the same CPU as well as the same amount of RAM. Mine is clocked at 2133Mhz. I went from 16GB of 1600Mhz to 32GB of 2133. (I needed the increased capacity for rendering and video editing and such and I got the kit from a friend for an amazing price ($150)).
The performance in game is identical. You won't need it. Unless you are using an APU RAM speed is pretty irrelevant.
Use that money to buy an SSD, better graphics cards, games, anything. But RAM. You don't need it.