An replace for AMD’s ROCm software program noticed by @Kepler_L2 has revealed basic specs for AMD’s yet-to-be-announced RDNA 3-based discrete graphics processors codenamed Navi 32 and Navi 33. The core counts of the GPUs might give some clues relating to the efficiency of AMD’s upcoming Radeon RX 7000-series choices for high-end and mid-range market segments.
AMD’s Navi 32 will characteristic 60 compute models (3840 stream processors), whereas the Navi 31 chip will pack 32 compute models (2048 stream processors) primarily based on ROCm code uncovered over at GitHub. To place the quantity into context, AMD’s range-topping Navi 31 powering the corporate’s Radeon RX 7900 XT and RX 7900 XTX graphics playing cards has 96 CUs, or 6144 SPs, in its full configuration.
Sadly, the variety of compute models/stream processors doesn’t precisely disclose the efficiency of precise graphics playing cards primarily based on AMD’s Navi 32 and Navi 33 GPUs. We should keep in mind that there are elements like yields, clocks, reminiscence bandwidth, energy consumption and worth factors the corporate desires to deal with.
Nonetheless, they actually give us some meals for thought. For instance, with 62.5% of the core rely of Navi 31, the Navi 32 might provide 60% to 65% of the Radeon RX 7900 XTX’s efficiency at across the identical clocks if it isn’t constrained by reminiscence. In the meantime, with a 3rd of the core rely of the top-of-the-line RDNA 3 chip, the Navi 33 might find yourself providing 30% to 35% of Radeon RX 7900 XTX efficiency on the identical clocks and with out reminiscence bandwidth constraints.
In fact, since we do not know concerning the efficiency of AMD’s Radeon RX 7900 XTX from impartial sources (similar to our personal Jarred Walton), we can’t know the way the cheaper Radeon RX 7000-series choices will stack up towards AMD’s current Radeon RX 6000-series merchandise. Nonetheless, assuming that the effectivity of RDNA 3’s stream processors is greater than that of RDNA 2, it’s secure to say that even the midrange Navi 33 will give its predecessor a run for its cash.
In the meantime, keep in mind that the ROCm replace reveals the utmost variety of CUs and SPs that Navi 32 and Navi 33 characteristic. The precise GPUs might have fewer compute models and stream processors.