Basically the same as a SER8 8845HS but with a NPU that I didn't find a practical use for and 1-4% slower and 1-10% warmer. These are very tiny differences and within variation error. The SER8 8745HS is still a very quiet and well worth the $100 (17%) price cut from the SER8 8845HS $600 typical price. Comparison on the SER8 8845HS vs 8745HS tab on the spreadsheet below:
https://docs.google.com/spreadsheets/d/1mHzUf9Mc2KZC7XjY2Y9KOp26uUJ_dMThe2vfSyQQANs/edit?usp=drivesdk