AMD's new 8-core FX-9370 (4.7 GHz.) and FX-9590 (5 GHz.) desktop CPUs turn back the clock to the days when clock speeds were a huge deal. AMD claims the 9590 is the "first commercially available 5 GHz. CPU," and promises unmatched gaming/multimedia performance. Both chips use AMD's existing 32nm process and Piledriver architecture (launched in 2012). As AnandTech observes, AMD is countering the launch of Intel's (INTC) 22nm Haswell CPUs, which offer modest performance gains but big power savings, by heading in a very different direction. Chips based on Piledriver's sucessor, Steamroller, launch later this year; they'll use a 28nm process.