Perhaps that was true in the mid 90s, but today Intel optimizes x86_64 for its highest margin core business: server/datacenter workloads. Any resulting benefit

Perhaps that was true in the mid 90s, but today Intel optimizes x86_64 for its highest margin core business: server/datacenter workloads. Any resulting benefit to desktop PC gaming is appreciated, but it's a side effect rather than a primary design goal.