The well-known informant @ greymon55 just quoted a source from the packaging factory on Twitter as saying: amd Ruilong 7000 series "phoenix" APU processor not only integrates rDNA 3 core display, but also is equipped with 3D v-cache cache, which was first introduced for consumer desktop CPU on r7-5800x3d** Thanks to the powerful rDNA 3 igpu, it is said that Phoenix APU can compete with NVIDIA geforce RTX 3060 mobile.
In addition, in terms of the number of cores, Phoenix APU will also launch a more direct challenge to Intel's competitors with the support of Zen 4 architecture - but 3D v-cache is also expected to become a secret skill of this series of chips.
Referring to the 96MB vertical cache on Zen 3 Raptor r7-5800x3d, although there are still concerns about heat accumulation, 3D v-cache still has a unique leading edge in many specific test projects. (the CPU of Xiaolong milan-x server is also upgraded with 3D v-cache compared with Milan)
However, on AMD's radeon RX 6000 series stand-alone product line, the company adopts a unique "infinity cache" infinite cache.
At present, it is unclear the exact purpose of the 3D v-cache cache on the Ruilong 7000 series Phoenix APU, that is, whether it is used as the last level cache of the CPU or whether it provides "infinity cache" support to the kernel display like Navi 2x GPU.
Compared with Intel, the core display solutions of the two companies are quite different. For example, Intel chip allows each IP block to be addressed in the cache through the ring bus.
The L3 cache on Apus such as amd Cezanne / Rembrandt is only a part of the CPU core complex (CCX) - the core display has its own LLC, and the infinity fabric interconnect bus is used as the communication hub of all IP blocks.
Looking forward to the future, amd APU is expected to develop towards the direction of unifying CCX and igpu end level cache, but only if the cache capacity is sufficient to support this function (it is likely to be realized through 3D v-cache stacking).
If so, rDNA 2 nuclear display will be benchmarked with RTX 3060m. As a reference, the radeon Rx 6650m XT notebook uses Navi 23 GPU chip and 32MB infinite cache.
This means that AMD can indeed provide about 64MB LLC cache for Phoenix APU through some ingenious memory management.