AMD Begins Enabling RDNA3 (GFX11) Graphics Architecture for LLVM Project

AMD Navi 3X GPUs and Phoenix APU will ship with RDNA3 architecture

LLVM patches confirm that AMD is preparing at least four RDNA3 devices.

A good indicator that AMD is preparing a new graphics architecture, has always been a trace of developing open source projects. In most cases, these are Linux drivers or development tools that are then used by new hardware. In this case, AMD is adding four new GFX11 GPU IDs to the LLVM project, which is a set of compilation tools for various programming languages.

AMD is preparing at least four new IDs: GFX1100, GFX1101, GFX1102, GFX1103. In the past, some IDs were shared between GPUs, but that has changed in the past few years, and now each GPU usually gets its own ID. Mainly because they have design changes that prevent using the same toolsets or presets. This will be especially important once AMD releases its dual-chip Navi 31 and Navi 32 GPUs. Supposedly, these two are included in this patch:

Graphic architecture AMD GFX11, source: LLVM

AMD Phoenix with RDNA3?

In addition, Navi 33 (GFX1102) and Phoenix APU (GFX1103) should be part of these new devices. This would also support rumors that Phoenix may indeed feature RDNA3 graphics. In other words, the Ryzen 7000 series of laptops, which could be launched early next year (possibly around CES 2023), would already come with a new architecture, just a few months after AMD unveils (hopefully) its desktop GPUs.

Update: apparently AMD confirmed through other patches that GFX1103 is indeed an APU. This doesn’t confirm Phoenix, but as the author claims, there aren’t many other devices that could fit into these specs:

AMD GFX1103 “APU”, Source: @Kepler_L2

Rumored AMD Ryzen APU Specs
Plug FP6 FP6 FP7 FP8
Wrap BGA-1140 (25x32mm) BGA-1140 (25x32mm) BGA-1140 (25x32mm) To confirm
Die size 156 millimeters2 175 millimeters2 ~208mm2 To confirm
CPU architecture Zen2 Zen3 Zen3+ Zen4
GPU Architecture GFX9 (Vega) GFX9 (Vega) RDNA2 RDNA3
GPU Setup 8 compute units 8 compute units 12 compute units 16 compute units
Memory Support DDR4 / LPDDR4 DDR4 / LPDDR4 DDR5/ LPDDR5 DDR5 / LPDDR5
PCI express Gen3 Gen3 Gen4 Gen5
CPU cores 8C/16T 8C/16T 8C/16T To confirm

Source: LLVM Going through @Kepler_L2

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