Normally we wouldn't report on something like this, because ultimately "some guy on a forum said a thing" isn't exactly newsworthy on its own. However, in this case, the poster in question is Kepler_L2, a well-known fellow who frequently shares insider information and astute analysis of upcoming hardware, particularly for AMD. Posting on the AnandTech forums in a long-running thread about Zen 5, Kepler_L2 replied to a user asking about specific claimed performance increases on AMD's next-gen pro...