They're referring to the ordinary DDR5-on-a-stick Ryzen implementation, not the LPDDR5X Ryzen AI implementation.
ETA: The only non-laptop results I have seen for the Ryzen AI place it worse than the 9950X, which has 2-channel plain old DDR5. The 4-channel LPDDR5X only wins when it can exploit the bandwidth and hide the latency, such as physics simulations. But for most applications the 9950X beats it. Hence my original point now well upthread: still waiting to see if the Strix Halo architecture is good for anything.
Strix Halo has a big GPU (for a laptop chip). GPUs love memory bandwidth and can tolerate latency, so... Strix Halo should be (and is) good at graphics and GPGPU.
