It seems like there is a very health space for an MOE targeted GPU where it has essentially an 5070ti with 16gb ish GDDR7 but then also has 128 GB LPDDR5x (or even just DDR5 as expansion dimms on it?). Putting this into the same card would likely reduce the transfer hit when a cache miss happened and the gpu had to load from the slower LPDDR5x. No need to have PCIe 5x16 limiting memory transfer if it is on the card. MOE models could then get near native performance and even models where the active parameters + context didn't quite fit the thrashing would be less of a problem. Not UMA but gets the UMA 'lots of system memory to play with' benefit.