As part of the presentation of the Ryzen – 2020 – processors we had the previously known details of the Zen 3 architecture have already been examined. More will be mentioned with the test report, which will appear next Thursday, November 5th.

Probably the most important feature is the merging of two CCX (Core Complex) on one CCD (Compute The) with four cores each and 16 MB L3 cache to a CCX with eight cores and 32 MB L3 cache. Each CCD therefore only consists of one CCX. This means that each core theoretically has up to 19 MB of L3 cache available while it previously only 16 MB and on the other hand there are accesses to the cache in another CCX at Zen 2 via the IOP, which is no longer necessary with Zen 3 – at least not with a processor that consists of up to eight cores and therefore only uses one CCD in addition to the IOP.

This reduced the Latencies that were far greater when a core in the CCX1 accessed the CCX2 than is now the case in a large CCX with eight cores. The larger L3 cache for all eight cores should also slightly increase the latencies for accesses, but these are certainly significantly lower than for accesses via the CCX.

Also from merging two CCX in a large refer to the Ryzen 2020 processors that 19% IPC performance plus. However, it is a combination of several measures. The branch prediction, i.e. the function of the jump prediction, has also been improved. The front and back end have received previously unknown adjustments (more on this as I said on Thursday) and the micro-op cache and the actual ALUs are now faster and can be used more efficiently. The load and store units can now execute one more command per cycle.

Whether AMD will really be able to snatch the gaming and single-threaded crown from its big competitor Intel, we will see on Thursday. AMD will start with the models Ryzen 9 5950 X with 16 cores, Ryzen 9 5800 X with twelve cores, Ryzen 7 5800 X with eight cores and Ryzen 5 5600 X with six cores. All of these fit into socket AM4 and work in the previous TDP framework of 65 and 105 We don’t know any euro prices yet, but this will certainly change by Thursday.