AMD’s ROCm software update spotted by @Kepler_L2 Rumors purportedly reveal general specifications for AMD’s yet-to-be-announced RDNA 3 based discrete graphics processors (codenamed Navi 32 and Navi 33). The GPU’s rumored core count could give some clues as to the performance of AMD’s upcoming Radeon RX 7000 series. Products for high-end and mid-range market segments.
AMD’s Navi 32 will feature 60 compute units (3840 stream processors) while the Navi 31 chip will feature 32 compute units (2048 stream processors) based on the ROCm code published on 32. GithubTo put the numbers into context, AMD’s range-topping Navi 31 powering the company’s Radeon RX 7900 XT and RX 7900 XTX graphics cards features 96 CUs or 6144 SPs in full configuration.
Unfortunately, the number of Compute Units/Stream Processors does not accurately represent the performance of actual graphics cards based on AMD’s Navi 32 and Navi 33 GPUs. You have to remember that there are factors such as yield, clocks, memory bandwidth, power consumption and price that companies want to deal with.
But they certainly give us food for thought. For example, at 62.5% of the core count of the Navi 31, the Navi 32 can deliver 60% to 65% of the performance of the Radeon RX 7900 XTX at nearly the same clock when not memory constrained. Meanwhile, with 1/3 the core count of the top RDNA 3 chip, the Navi 33 delivers 30% to 35% of the performance of the Radeon RX 7900 XTX at the same clock and without memory bandwidth constraints. It will be.
Of course, we don’t know the performance of AMD’s Radeon RX 7900 XTX from independent sources (such as our own Jarred Walton), so how do the cheaper Radeon RX 7000 series products compare to AMD’s existing Radeon offerings? I don’t know. Products in the RX 6000 series. However, assuming RDNA 3’s stream of his processor is more efficient than his RDNA 2’s, it’s safe to say that even his mid-range Navi 33 is on par with its predecessor.
On the other hand, remember that the ROCm update reveals the maximum number of CUs and SPs that Navi 32 and Navi 33 have. A real GPU may have fewer compute units and stream processors.