3 ms·

they probably don't use a single chip.

• wtallis 3y ago
  That doesn't alleviate the capacity issue. Even if it's a 1Gbit chip with an 8-bit interface, then a 256-bit bus would only add up to 4 GB of DRAM at most. The ratio of capacity to bandwidth is just not anywhere close to what makes sense for ordinary GPU usage.
  • utopcell 3y ago
    This doesn't seem to be an ordinary GPU however. It needs to process input from all the sensors and produce some low-bw output (positioning, object detection from lidar etc). They probably have enough RAM to buffer/post-process whatever they need from the sensors.
    • wtallis 3y ago
      Right, I'm using the memory chip as strong evidence to argue that the R1 cannot be an ordinary GPU.
      • utopcell 3y ago
        Makes sense.