Last November, sources @Kepler revealed that AMD was working on a small APU called “Phoenix 2”, a “smaller version” of the Phoenix. Existing developers found the chip on the GitHub ROCm development tools list.
AMD’s Phoenix 2 ASIC is listed right underneath the Phoenix 1 APU, which was just launched this week. This series of APUs uses the “GFX1103” RDNA 3 GPU, which means that the graphics section will be similar to the existing Phoenix APUs.
AMD Phoenix 2 APU is confirmed to feature a hybrid architecture with dual Zen 4s, complemented by an RDNA 3 GPU for low-power and high-efficiency devices.
According to Coelacanth-Dream, the AMD Phoenix APU has two GFX1103 “RDNA 3” IDs, one of which is the GFX1103_R1, which has a full 512 KB of L2 cache, while the second, the GFX1103_R2, has only 256 KB.
AMD may have decided that low-power mobile platforms do not require as much L2 cache, so they have neutered it to half of its original size in the new revision, which is expected to be used by OEMs for entry-level platforms, replacing Mendocino APUs and possibly handhelds.
In contrast to Intel’s large and small cores (which combine two different processor architectures), AMD is using the Zen 4 architecture here, based on the same instruction set, but with differences in power consumption and frequency.
The RDNA 3 GPU has been reduced from six WGP (12 CU) to two (4 CU) and the TDP has been reduced from “35W+”. RDNA 3 GPU has been reduced from six WGP (12 CU) to two (4 CU) and TDP has been reduced from “35W+” to a maximum of 28W.
It’s unclear when AMD is planning to release the series of chips, but sources say that AMD will launch the RX 7600 XT graphics card on May 25, so maybe it will show off other content, such as processors, at Computex Taipei 2023, which will be held from May 30 to June 2.
