According to Chips and Cheese, current Zen 4-based Genoa engineering samples offer 29 percent IPC improvement at the same clock and core count, compared to Zen 3-based Milan. This is an impressive boost considering AMD could squeeze additional improvements from the clock and core count increase, reaching up to 40 percent improvements. AMD's Zen 4 architecture is expected to launch in 2022.
We will most likely see Zen 3+ first
Before AMD launches Zen 4-based CPUs, we first expect it to go for Zen 3+, which could give Zen 3 architecture a new breath of life in 2021, with a new AM5 platform, new TSMC N7 node, and rumored new I/O design, which should give it a 4 to 7 percent IPC increase, thanks to higher clock speeds and slight architecture tweaks.
AMD keeps delivering on its promises, showing a solid CPU roadmap and we look forward to the rumored Zen 3 update later this year.