Sonny73N :
Hmm... How fast does 4285.6 MHz 14-31-31-50 compare to my 1333MHz 7-7-7-21?
That depends a lot on whether your software is more bandwidth-bound or latency-bound.
Since this memory is running at over 3X your memory's clock speed, the latencies are equivalent to 5-10-10-16 at 1333MT/s which is not that bad. The much higher bandwidth allows filling cache lines much faster and would likely make up for most of the loss on timings.
In general, the only type of code where lower latency systematically wins over bandwidth is very branchy and unpredictable code like compilers. For most mainstream software though, CAS latency and speed grades can be traded for each other with little to no net effect on performance.