Monday, January 11th 2021
Dual-CCD Ryzen 5 5600X and Ryzen 7 5800X In the Wild
Certain AMD Ryzen 5 5600X and Ryzen 7 5800X processors are physically based on a dual-CCD design, according to an investigative report by Igor's Lab and Yuri "1usmus" Bubliy. The 5600X and 5800X are normally meant to be single-CCD processors owing to their core-counts. Based on the "Vermeer" multi-chip module design, the Ryzen 5000 series desktop processors use up to two 8-core CCDs to achieve their core-counts of up to 16 cores, with the 6-core 5600X and 8-core 5800X normally having just one CCD; while the 12-core 5900X and 16-core 5950X use two.
There are, apparently, some 5600X and 5800X built from dual-CCD MCMs, in which an entire CCD, although physically present on the package, is disabled. A 5600X based on a dual-CCD design is essentially a 5900X from which one of the CCDs didn't fully qualify; while the 5800X dual-CCD is a 5950X in which one such die didn't quite make the cut. There's no telling which CCD is disabled, it could be CCD 0 or CCD 1, those with CCD 0 disabled could trigger minor (benign) UI bugs with certain tuning utilities, which is how Wallossek and Bubliy discovered these chips. In any case, you're getting a 5600X or 5800X that works as advertised, and is fully covered by AMD's product warranties. Igor's Lab is investigating further into these dual-CCD 5600X and 5800X chips, and is probing the possibility of unlocking them to Ryzen 9.
There are, apparently, some 5600X and 5800X built from dual-CCD MCMs, in which an entire CCD, although physically present on the package, is disabled. A 5600X based on a dual-CCD design is essentially a 5900X from which one of the CCDs didn't fully qualify; while the 5800X dual-CCD is a 5950X in which one such die didn't quite make the cut. There's no telling which CCD is disabled, it could be CCD 0 or CCD 1, those with CCD 0 disabled could trigger minor (benign) UI bugs with certain tuning utilities, which is how Wallossek and Bubliy discovered these chips. In any case, you're getting a 5600X or 5800X that works as advertised, and is fully covered by AMD's product warranties. Igor's Lab is investigating further into these dual-CCD 5600X and 5800X chips, and is probing the possibility of unlocking them to Ryzen 9.