AMD’s upcoming discrete GPU architecture isn’t targeting the high-end enthusiast market. However, based on rumors, gamers should still anticipate this significant update to AMD’s lineup because of the anticipated enhancements in power efficiency and ray tracing hardware acceleration.
Kepler_L2 reports that RDNA4 GPUs will likely come with three different memory configurations, featuring 256-bit and 192-bit memory buses with speeds of 20, 19, and 18 Gbps. These memory chips, as previously disclosed, are GDDR6. In theory, this enables RDNA4 GPUs to deliver a bandwidth ranging from 456 to 640 GB/s.
This would actually surpass the bandwidth of the current-gen RX 7800 XT or RX 7900 GRE, which reach up to 576 GB/s according to AMD’s reference specifications. Of course, users can overclock the memory to achieve even higher performance.
Benchlife has also disclosed that AMD is working on four variants of Navi 4X GPUs. These include the R24D, with E6 and E8 variants (the E6 variant has been confirmed as the Navi 48 XT), and the R25D-P8 and P4, which are likely to be Navi 44.
AMD is unlikely to release any RX 8900 models in the new series due to the cancellation of the Navi 41. However, depending on performance, AMD might market the new series as RX 8800 XT to RX 8600 models. If the Navi 48 ends up with 32 WGPs (4096 Stream Processors), it would already have more cores than the RX 7800 XT.
Of course, this is still speculation at this point, with nothing confirmed yet. The Navi 48 has only appeared on Geekbench once so far, and it might not even reflect the full configuration or be a desktop GPU—it could be a mobile GPU tested on a desktop.
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— Kepler (@Kepler_L2) August 27, 2024
