Whenever you fab a wafer with CPU/GPU dies (or no matter they’re fabbing), there are at all times defects. So if a wafer has 200 CPUs dies and 50 are purposeful, your yield is 25%. Well, the yield of the Zen 2-cores ought to be good, roughly 70 % of the chips are totally purposeful.
When AMD began unique ZEN at 14nm, that was quantity was 80%, so they aren’t that far off on this early stage of fabrication. in a report from bitsandchips that quantity is 70 %, which isn’t excellent, however good. The website depends on “unspecified sources” although, however has been confirmed dependable up to now.
The small die measurement of the Zen 2-core is estimated to be 88 mm² and appears to be the serving to issue against designing huge monolithic chips. For instance, Intel’s XCC-Die with 28 cores, in response to chatter, for a completely purposeful chip exhibits solely 35 % in yields. If you retain that thought in thoughts, the upcoming Threadripper additionally would yield at 70% because it makes use of the identical CPU dies added collectively in a chiplet design. So that is twice the yield of Intel.
Unfortunately, there isn’t any official phrase on clock frequencies and costs simply but, we won’t wait to listen to the official bulletins, that are anticipated on the AMD keynote beginning at Computex late in May.
