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HomeDigit News12,228 stream processors, 384-bit memory bus, and 192MB fast cache. Possible...

12,228 stream processors, 384-bit memory bus, and 192MB fast cache. Possible characteristics of the Radeon RX 7900 XT

Another portion of preliminary details about AMD’s new generation 3D cards has been published on the Web.

It is assumed that the Radeon RX 7900 XT will be built on the Navi 31 GPU, consisting of one GCD module (the equivalent of CCD in Ryzen processors) with 12,288 stream processors and six MCD modules – each with 16 MB of third-level cache (Infinity Cache) and 64 -bit memory controller. In total, this gives 96 MB of cache memory and a 384-bit bus, but the use of bulk packaging technology will allow each MCD to place another cache chip, as a result, the total volume of Infinity Cahce will be 192 MB.

Schematic representation of the Navi 31, Navi 32 and Navi 33 GPU layout

This is the full Navi 31 configuration, but there will also be a stripped-down version – with 10,752 stream processors and five MCDs – with 160 MB of Infinity Cache and a 320-bit bus. Such a GPU could form the basis of the Radeon RX 7800 XT.

Navi 32 is another contender for the Radeon RX 7800 XT (or more likely the Radeon RX 7800). It predicts the presence of 7680 stream processors, a 256-bit bus and 64 MB of Infinity Cache (there will be no additional cache memory chips). Finally, the Radeon RX 7700 XT can get a monolithic Navi 33 GPU with 4096 stream processors and 32 MB Infinity Cahce and a 128-bit bus.

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