Navi 33 is said to bring the same 5120 stream processors as Navi 21

Generation Ships 3x built on the RDNA 3 architecture is supposed to bring, among other things, chipsets. There are various leaks and patents that – if we put them together – create the picture that they will be Navi 31 (top model) a Navi 32 (top-1 model) built on chipsets. The patents suggest that the pair of chips should be connected by a silicon pad (interposer), which, however (compared to what we know so far) will be active, ie. it will not only carry connections for chipsets, but will also have another function or functions. The main one could be the layout of the Infinity Cache, which would be very practical.

While the existing sprays (on which there could be some truth with regard to the decent credibility of resources) speak of Navi 31 a 32 as a chiplet solution, smaller Navi 33 should be a monolith. It is not yet known whether Navi 32 will look just like Navi 31 (ie active interposer and two – probably smaller – chipsets), or whether it will be one chiplet (same as for Navi 31) a interposer. Navi 33 however, it will already be “small” enough to make production profitable as monolithic.

This is basically agreed by the new information from the leaker KittyYYuko, according to which Navi 33 will probably carry the same kernel configuration (80 CU / 5120 stream processors) as the current one Navi 21, only on newer architecture (we supply: and newer, 5nm, process). So far, the configuration of the memory bus (depending on the used memories) remains somewhat unclear, but it will certainly not be such as to halve the performance of the chip.

If we ask ourselves whether it is at all possible for the next-generation top-2 chip (Navi 33) had the performance as the top model of the current generation (Navi 21), we can start from the performance data of the upcoming top model, Navi 31. Its performance should reach up to 2.5 times the current Navi 21. If it will Navi 32 (as Navi 22) to achieve 67% of the performance of the top-model of the given generation (ie Navi 32 will be about 1.6x faster than the current high-end), then Navi 33 with a performance of about “1x higher” than at the current high-end, it quite corresponded to the expected model scaling.

Although such a shift looks very good, we must keep in mind that to release RDNA 3 / Ships 3x will not take place until the second half of 2022, and the possibility cannot be ruled out that, as with the current generation, only the top model will be released in that year (Navi 31) and others will not follow until early 2023.

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