With the same compiler being used between Fedora 19 and Fedora 20, the CPU benchmarks aren't exciting between the two distribution releases. More benchmarks can be found at 1311133-SO-FEDORALIN52. The biggest change to find with Fedora 20 from the performance perspective is the open-source graphics driver improvements. More benchmarks to come when hitting Fedora 20 stable.
Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.