Faster ram would improve your performance....
By a whopping 1%.
Not much worth it for that.
Your ram link does not work for me.
Ram is cheap, and I can see a valid argument for 16gb.
Windows will keep more in ram, available for instant reuse.
For gaming, though, not much help since a game , by itself, will not use more than 2-3gb.
If you do lots of multitasking, or run 64 bit enabled apps like photoshop, then adding ram is a good idea.