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Thursday | September 24, 2020
AMD: a GPU with chiplet for RDNA3?

AMD: a GPU with chiplet for RDNA3?

With Zen and Zen 2, AMD began the introduction of the chiplets on processors taking advantage of the infinity fabric, the brand would do it again, but this time on GPUs.

GPUs with chiplets for 2021-2022?

After Intel and their Ponte Vecchio GPU for the data center equipped with 1 to 4 chiplets and Nvidia which launched the Hopper generation engraved in 5nm (successor of Ampere), AMD would also plan graphics cards using chiplets for RDNA3 according to AquariusZi, a leaker talking mainly about AMD and Nvidia.

First of all, 2 – 3 new rumors about Big Navi to be released this year on RDNA2: The launch would only take place in November, 1-2 months after the expected release of the Ampere. RDNA2 would not use 2.5D technology (allowing chips to be stacked on top of each other), thus excluding the use of HBM2. This generation would be well etched in 7nm+ EUV (AMD mentioning only 7nm on their slide) allowing +20% density with either +10% performance or -15% power consumption.

AMD RDNA3

Moving on to the important part of the rumors: RDNA3. The leaker talks about one of the biggest revolutions in the world of the GPU, without giving more details at the moment. But inviting us to watch a slide of the roadmap for AMD GPUs, stating an “..Advanved nodeinstead of a precise engraving.

This would be due to the use of the chiplet, as for Zen 2, having a die for i/o etched in 12nm and a die for core etched in 7nm, RDNA3 could see chiplets of Compute Unit engraved in 5nm and having for example a chiplet of RT core engraved in 7nm for example.

A switch to the chiplet on GPUs would be a big step forward, it would allow AMD to put more heart on each GPU, to make chiplets dedicated to the CU, the RT core…i/o… etc, the whole thing coupled with infinity fabric. This allows for higher bandwidth with the lowest possible latency.

AMD RDNA3

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Edited by Calliers

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