The account @kopite7kimi on X (formerly Twitter) has many times released leaked information about upcoming hardware from various manufacturers, and is now up and running again with details on Nvidia’s Blackwell architecture, the successor to Ada Lovelace.
GB100 and GB202 are the names of two of the Blackwell circuits that are successors to the GH100, which is used in AI cards for the server market, and the AD102, which is used in, among other things, the Geforce RTX 4090. Both older models have 18,432 CUDA cores. According to kopite7kimi, the GB100 will have 20,480 CUDA cores, and the GB202 a whopping 24,576. This means that the Geforce RTX 5090 can get 30 percent more CUDA cores than its predecessor.
In addition to the increased number of cores, kopite7kimi claims that Nvidia will also widen the memory bus in both cards, to 8,192 bits in the GB100 which uses HBM3/HBM3E memory, and 512 bits in the GB202. The AD102 has a 384-bit bus and memory bandwidth is one point in the current generation where Nvidia has been criticized for skimping. A substantial increase in the next generation could be an answer to that criticism.
2023-09-29 19:11:52
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