I agree with lauraexplorer6, different processors are faster at different things, so it’s probably not possible to say “this processor is the fastest one released in 2014”.
However, he’s my opinion of which is the fastest:
In the server market, with a phenomenal 30M cache and 12 cores, the Intel® Xeon® Processor E5-4657L v2 reigns supreme. This is the perfect processor for standard server operations that support multicore (virtualization).
If you’re running server applications that don’t support multicore, then at only 2.4GHz, you probably won’t find the Intel® Xeon® Processor E5-4657L v2 the fastest. Also, if you’re running a home PC that’s typically used for gaming, this probably isn’t for you either. You’ll probably find the Intel® Core™ i7-4940MX Processor Extreme Edition the fastest (and a quarter of the price), with 8M of cache and up to 4GHz of speed.
Of course, if you are running applications that are single threaded, but do a lot of CPU context switching then you really need a lot of cache, in which case the Xeon will be better for you.
Moral of the storey: there isn’t one single fastest CPU of 2014, you have to decide what applications you want to run, how they use resources and then pick the best CPU.