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Radeon RX 7900 XTX

Radeon RX 7900 XTX: the future spearhead of AMD’s RDNA 3 range?

After NVIDIA, the new generation of graphics cards is preparing to take over at AMD as well.

Although difficult to source, the release of the GeForce RTX 4090 at NVIDIA has opened the ball for the new generation. A ball that should see AMD land next week.

The delay of the Navi 32 and Navi 33

While waiting for the official announcement scheduled for November 3 at 9 pm, French time, various rumors have emerged. The most important of them evokes a strategy similar to that of NVIDIA.

If it is indeed a question of introducing the new RDNA 3 architecture, AMD would not have the idea to launch a whole range of graphics cards. Only the most powerful model would be released.

Called “Radeon RX 7900 XTX”, the card in question would bring out of the boxes a suffix that AMD had not used since the Radeon X1000 series and would especially confirm the shift of the Navi 32/33.

amd rdna3

A TDP of 420 Watts for Navi 31

According to the latest rumors, the Radeon RX 7900 XTX is designed around the Navi 31 GPU, which integrates 12,288 stream processors through an MCM or multi-chip module construction.

The principle here is to associate several logic chips within a single package and if it would be used for the first time on a GPU, AMD has a good experience of the thing, with CPUs in particular.

Navi 31 is based on TSMC’s N5 (5nm EUV) etch process and is paired with a GDDR6 memory controller etched in N6. It has a 384-bit interface bus for 24 GB of GDDR6 at 20 Gbps.

Rumors suggest a total bandwidth of 960 GB/s while the TDP would be around 420 Watts, very close to the 450 Watts of the GeForce RTX 4090. It remains to be seen with which socket(s) AMD intends to power the thing: the classic 8-pin or the new ATX 12VHPWR?

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