The thought of a discrete GPU working in tandem with the integrated graphics sounds interesting, especially since the leaked benchmarks of Xe devices have always pointed to a single GPU. Nonetheless, we can't discard the likelihood of SiSoftware misreporting the GPU. Xe is unreleased hardware after all, and it's always tricky to pick those up.
The dual-GPU setup reportedly features a total of 192 Execution Units (EUs), which comes out to 1,536 shader cores. Apparently, there's 6.2GB of memory and 2MB of L2 cache onboard as well. The dual-GPU completed the benchmark with a 1.25 GHz clock speed. If we dissect the setup, it falls perfectly in line with our theory.
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— APISAK (@TUM_APISAK) October 13, 2020