They skipped 4000 because of their mobile/APU series, which always used +1000 in the model number: - Zen 2 desktop: 3000 - Zen 2 mobile/APU: 4000 This way, Ze

They skipped 4000 because of their mobile/APU series, which always used +1000 in the model number: - Zen 2 desktop: 3000 - Zen 2 mobile/APU: 4000 This way, Zen 3 will all be on 5000