There are more and more exposures about the next generation of graphics cards, and they are becoming more and more detailed and more and more amazing. According to the hardware exposure master @Greymon55, the AMD RX 7000 series graphics card's large core Navi 31 (expected to correspond to the RX 7900/7800 series) will integrate up to 7 chiplets! These include two 5nm process GCD, four 6nm process MCD, and one IOD.
The full name of GCD is "Graphics Complex Dies", that is, the graphics unit part, including the stream processor core, the light chasing core, the ROP/texture unit, etc., using the 5nm process.
The MCD guess is "Memory Complex Die", which should include an infinite cache, video memory controller part, and use a 6nm process.
The IOD is the interconnect controller, corresponding to the Infinity Fabric bus unit.
But it is not clear how GCD and MCD are arranged and combined, and the planes are side by side? Or is it stacked up and down?
As for why so many small chips are piled up, it is natural to do the computing scale, at present, the Navi 31 core should have a huge 800 square millimeters, 15360 stream processor cores, 256MB or 512MB unlimited cache, the power consumption of the whole card is 500W, and the performance is said to be about 2.5 times that of the Navi 21 core.
It is worth mentioning that yesterday we just saw the internal design of the next generation of AMD Zen4 architecture Xiaolong processor, placing up to 7 small chips, including 6 CCDs, 1 IOD, and up to 96 cores and 192 threads.
