AMD Ryzen 3 3300X Isn’t Just a Speed-Bump of the 3100: CCX

AMD has introduced its Ryzen 3 “Matisse” quad-core desktop processors, with two SKUs within the pipe, the $99 Ryzen 3 3100 and the $120 Ryzen 3 3300X. Both are 4-core/8-thread components spaced aside by clock-speeds, or so we thought. According to an alleged AMD presentation slide leaked to the net, the differentiation between the 2 runs deeper than that. Both chips are primarily based on the “Matisse” multi-chip module, with a single 8-core “Zen 2” chiplet that has 4 disabled cores. How AMD goes about disabling these cores seems to be the key sauce behind the “X” on the 3300X.

Inside every “Zen 2” chiplet, the Eight cores are unfold between two 4-core CCX (compute complexes). On the 3100, AMD disabled two cores per CCX, and halved the 16 MB L3 cache per CCX. So it finally ends up with a 2+2 core CCX configuration, 8+Eight MB of L3 cache including as much as 16 MB. The 3300X takes the extra scenic route. An complete CCX is disabled, all 4 cores are a part of the identical CCX. This design lowers inter-core latency among the many cores, and extra importantly. provides every of the 4 cores entry to 16 MB of shared L3 cache. And then there’s the speed-bump. This goes a good distance in explaining how the 3300X is proven inside placing distance of the Core i7-7700Ok in leaked Cinebench scores, and will present a formidable gaming processor within the decrease finish.