Please note that this post is tagged as a rumor.
AMD CEO Lisa Su commented on the rumor during Bernstein’s “Annual Strategic Decision Conference”. She stated that new nodes usually start with mobile processors as these are easier to manufacture. She did not mention Zen3 when talking bout 5nm node, but she did mention Zen4 a few times. Source
AMD has allegedly changed its plans to introduce Ryzen 4000 series on 7nm.
DigiTimes: AMD Ryzen 4000 on 5nm+?
According to DigiTimes, AMD has changed the plans to introduce new architecture featuring Zen3 cores on a 7nm EUV fabrication node. The company is now rumored to launch Ryzen 4000 series on 5nm node (5nm+) instead.
The TSMC foundry has only begun mass production of 5nm wafers in April, with an enhanced 5nm+ node planned to enter production in Q4. This will allegedly affect plans for Ryzen 4000 launch, as AMD was initially targeting September/October, Digitimes reports.
Rumor has it that AMD and TSMC have adjusted their foundry blueprints. The Ryzen 4000 desktop processor series originally expected to launch at the end of 2020 will now use TSMC’s enhanced 5nm processor (5nm Plus) instead of 7nm EUV.
This rumor could suggest that AMD will become TSMC’s key partner for the 5nm era. AMD has not commented on the report. The company has only confirmed that Zen3 will be launched in late 2020. Unfortunately, it was not confirmed if the launch would refer to EPYC or Ryzen series.
It is unclear if the 5nm+ would be used by Threadripper ‘Genesis Peak’ series as well. NVIDIA is also rumored to introduce the 5nm TSMC node for the Hopper series, however that appears to be very far from now, as Ampere is expected to span across Tesla (now called Tensor Core Series), Quadro and GeForce series.
The report goes against AMD official roadmaps, clearly stating that Zen3 cores will launch on a 7nm node.