Specifications leak for AMD’s Navi 32 and Navi 33 GPUs through ROCm code
AMD’s Radeon Navi 32 and Navi 33 chip specifications have leaked
Thanks to new information from AMD’s ROCm code, as discovered by @Kepler_L2 on Twitter, we now know the CU counts of AMD’s planned Navi 32 and Navi 33 GPU cores, giving us a glimpse at AMD’s lower-end Radeon RX 7000 series GPU models.
AMD’s RDNA 3 flagship, their RX 7900 XTX has 96 CUs and 6144 stream processors, and AMD’s ROCm code has confirmed that AMD’s Navi 32 and Navi 33 cores will feature 60 CUs and 32 CUs respectively.
With 60 CUs, AMD’s Navi 32 silicon will offer users 3840 stream processors, which is the same CU/SP count as AMD’s Radeon RX 6800. Navi 32 will feature the same RDNA 2 enhancements as AMD’s RX 7900 XTX, and is expected to have a 256-bit memory bus that uses four memory die chiplets. If these specifications prove to be legitimate, AMD’s Navi 32 GPUs will be able to support 16GB of GDDR6 memory.
AMD’s Navi 33 GPU design has 32 CUs and 2048 stream processors, which is the same as the Navi 23 Silicon that was used to create AMD’s Radeon RX 6600 XT. With the benefits of AMD’s RDNA 3 graphics architecture and clock speeds that are expected to be higher than its RDNA 2 counterpart, AMD’s Navi 33 graphics chip should be able to deliver impressive levels of GPU performance at a moderate cost.
|RX 7900 XTX||RX 7900 XT||Navi 32||Navi 33||RX 6900 XT|
|Architecture||RDNA 3||RDNA 3||RDNA 3||RDNA 3||RDNA 2|
|CPU Silicon||Navi 31||Navi 31||Navi 32||Navi 33||Navi 21|
|Game Clock||2300 MHz||2000 MHz||–||–||2015 MHz|
|Boost Clock||2500 MHz||2400 MHz||–||–||2250 MHz|
|Peak Single Precision Compute||61 TFLOPS||52 TFLOPS||–||–||23.04 TFLOPS|
|GPU Memory (GDDR6)||24 GB||20 GB||–||–||16 GB|
|Memory Speed||20 Gbps||20 Gbps||–||–||16 Gbps|
|Memory Bus Size||384-bit||320-bit||–||–||256-bit|
|Memory Bandwidth||960 GB/s||800 GB/s||–||–||512 GB/s|
|Infinity Cache Size||96 MB||80 MB||–||–||128 MB|
With AMD’s RX 7900 XTX delivering a huge performance improvement over AMD’s RX 6950 XT, we expect to continue seeing significant performance gains from the remainder of AMD’s Radeon RX 7000 series GPU lineup. If AMD prices their graphics cards correctly and continues to deliver impressive performance improvements, RDNA 3 could prove to be a major turning point for AMD, especially if Nvidia’s pricing remains as it is.