AMD Radeon RX Gamma XT GPU: A 26 TFLOPs Monster With 1.5 TB/s of Bandwidth And 21.2 Gigarays Ray Tracing Support
A block diagram of the upcoming Gamma XT GPU has also been leaked. The compute engine capacity has been doubled and is referred to as QCU or Quad Compute Unit. What is (pleasantly) surprising is the fact that the card sustains a clock speed of 2.633 GHz - which is absolutely insane.
Overall, the card contains 80 compute units. Since the slide mentions 5120 stream processors, we can now lay to rest rumors about an increase CU to SP ratio. It is still 64. The clock speeds are divided into 3 categories just like small Navi and the highest clock speed goes all the way up to 2633 MHz. Based on this clock speed and assuming the same instructions as the last architecture, this card can deliver a resounding 26.6 TFLOPs of single-precision compute. This is a phenomenal jump over the last generation and driven not only by an increase in core count but by an increase in clock speeds as well.
It also looks like AMD has doubled down on ray tracing with support for up to 21.2 Gigarays per second. To put this into perspective, NVIDIA's current generation RTX flagship the RTX 2080 Ti can only sustain a Gigaray count of 10.