An anonymous reader quotes a report from ExtremeTech : Having spent over four years designing the architecture, the company plans to keep it around for at least that long. That's according to CTO Mark Papermaster, who was on-hand to discuss the chip. First things first -- AMD is promising a hard launch for Ryzen, without any paper launches, limited availability, or limited product introductions. When Zen debuts it'll debut in multiple (still unknown) configurations, not a single eight-core part. As PCWorld details, Papermaster also confirmed the four-year target and emphasized that it didn't mean AMD wouldn't iterate the core. "We're not going tick-tock," Papermaster said. "Zen is going to be tock, tock, tock." There are several ways to read this sentence. Tick-tock refers to Intel's previous practice of introducing new CPU architectures in one product cycle and new manufacturing nodes in the other. AMD has never strictly deployed an equivalent approach over multiple product cycles. I wouldn't necessarily conclude that Papermaster is saying AMD won't deploy Zen on new manufacturing nodes over time, but that AMD intends to implement an aggressive series of tweaks and improvements to the current core as time goes by. There's a significant lag between when a design tapes out and when it ships to consumers. This means AMD's CPU design team is almost certainly hard at work on Zen's successor already, even though Zen hasn't actually shipped yet. While I can't make any concrete predictions about how Zen will compete against specific products in Intel's lineup, the demos we've seen and the product information already available has convinced me that Ryzen will be at least a meaningful and significant improvement on AMD's overall power efficiency, performance, and performance-per-watt.