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AMD RDNA4 exposure: GDDR7 memory, 3.5GHz clock rate, FP32 performance up to 129TFLOPs

2025-02-28 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > IT Information >

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Thanks to CTOnews.com netizens Wu Yanzu in South China for the delivery of clues! CTOnews.com news on December 20, foreign oil pipeline channel RedGamingTech in the latest video, sharing the AMD RDNA4 architecture and the upcoming Navi 41, Navi 42 and Navi 43 GPU information. RedGamingTech's past revelations have been largely accurate, but the video is still marked as "rumor" because it is still a long time before it goes on sale.

CTOnews.com learned that RGT confirmed that the number of ALU for RDNA4 CU would be exactly the same as for RDNA 3, meaning that each CU would have the same number of ALU. RDNA4 may be equipped with GDDR7 video memory and PCIe 5.0 (6. 0 is not ready yet), but it is not certain at this time.

Interestingly, the target acceleration clock rate of the RNDA4 architecture is 3.5GHz, which means that the ratio of performance to power consumption (Performance per watt) will increase by 50-60%.

AMD wants to equip RDNA4 with RayTracing and AI / ML performance that RDNA3 lacks. AMD will also greatly increase caching, equipped with third-generation Infinity Cache. The WMMA (Wave Matrix Multiply-Accumulate) V2 matrix instruction allows full use of the SIMD channel, doubling the performance of each CU.

Navi 41:

Even crazier, Navi 41 has 32GB's vRAM (possibly GDDR7 video memory). The second configuration also has 24 or 48GB GDDR7 and 6 MCD (the 32GB version has 4 MCD). Navi 41 will have 144CU with a clock rate of 3.5GHz and 128ALU,FP32 per CU with an astonishing 129TFLOPs performance. This will obviously be a monster-level performance.

Navi 42:

The Navi 42 is slightly flat, with a total of 96 CU and a clock rate of 3.5 GHz. The performance of the FP32 can reach 86 TFLOPs. 96 CU is also the number of RDNA3 flagship product Radeon 7900 XTX, so this SKU will represent basically the same between RDNA3 and RDNA4.

Navi 43:

It will have 48 CU. The main frequency is about 3.5GHz. The performance of FP32 can reach about 43 TFLOPs.

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