AMD’s Ryzen 7000 series (Raphael) processors with Zen 4 cores have an I/O die and up to two CPU core dies (CCDs – often called chiplets) under an integrated heat spreader (IHS). is included. Only the Ryzen 9 models require a second CCD chiplet to offer higher core counts, but TechTuber recently revealed that the Ryzen 5 7600X CPUs (which typically only have a single CCD chiplet) are IHS’s I confirmed below that it shipped with dual CCDs.
what’s happening? AMD followed the same production methodology as the previous generation and was designed to “maximize production resources”, so no anomalies. Vermeer) I noticed that both CPUs were driving two CCDs, but only one was being used and needed.
This approach is neither secret nor new. AMD has been completely transparent about this aspect of its production strategy. tom’s hardware The editor-in-chief asked about it last year.
In response to a question about the dual CCDs in the lower tier Vermeer processors, AMD said it uses this strategy to maximize production and minimize waste. It gave an example: “A processor with one disabled CCD can be manufactured to spec as a Ryzen 7 5800X or Ryzen 5 5600X with the remaining CCD.” But nevertheless, it helps us to ensure that our customers get every chance to purchase high-performance Ryzen processors.” It looks like they continue to use the same manufacturing method in their CPUs.
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Tech-savvy PC DIYers and enthusiast PC enthusiasts say that processors with one CCD disabled and one active may perform worse than processors manufactured with a single CCD. You may have concerns. In response to this question, AMD claimed that “disabled CCDs are permanently fused off at the factory and do not affect active dies”. So there is no latency penalty for dual CCD processors where one CCD is fused. Unfortunately, this response also closed the door on users’ hacking desires for reactivating surplus dies.
I effectively put cold water on the “surprise discovery” unearthed by TechTuber, Der8auer (opens in new tab) In his Ryzen 5 7600X deliding video, the video is still remarkable.