Question DDR3 2133 upgrade from DDR3 1866 worth it?

[ManOfArc]

Consider an old FX-8350 overclocked to 4.6ghz with a RX 580 also overclocked and 2x8GB DDR3 1866mhz. Would a RAM upgrade to 2133 mhz be noticeable in gaming?
How about 2400mhz? Would the memory controller even handle that?

 

[bignastyid]

Performance increase would be negligible. Save your money till you can upgrade to a newer better platform.