Immediately before Athlon destroyed the Intel Prescott Pentium architecture (Intel cancelled it and started over with Core/2 and licensed x86-64 from AMD, etc.), Athlon had teething pains centered around Athlon compiler optimization and developer support. Soon as those items were taken care of--just a couple-three months of time--the Athlon decimated the Pentium architecture. During the next year or more, you could not find a gaming web site that was still using Intel cpus, believe it or not. There was that much difference. Anyway, Ryzen is a brand-new architecture, just like Athlon was, and some time for compiler optimization and developer support will of course make a difference in gaming performance. Support for Intel's i-series in those terms is as mature now as it will ever be, while Ryzen is still washing off the amniotic sac... How much of a difference? I don't know--time will tell.