Intel Core Ultra 9 275HX Crushes Core i9-14900HX In Cinebench R23 Multi-Core, While Losing Out in Single-Core

The Intel Core Ultra 9 275HX was unveiled by Big Blue at CES 2025, packing 8 Lion Cove performance cores and 16 Skymont efficiency cores for a total of 24 cores and 24 threads, thanks to Intel doing away with Hyper-Threading support. As such, we already had quite low expectations for multicore performance from Arrow Lake-HX, although a recently listed Cinebench R23 run appears to confirm the contrary. However, considering the nature of leaks, be sure to accept this information with a fair amount of skepticism until more information comes our way.

To be honest, this result is quite a doozy, for the aforementioned reason. Like its predecessor, the Core Ultra 9 275HX will also boast the same number of performance and efficiency cores, without Hyper-Threading support. But somehow, the result indicates that the 275HX handily outperforms the Core i9-14900HX in multicore performance by a whopping 18%, despite losing out in single-core performance by the skin of its teeth. Clearly, something is going on here, that I am unable to wrap my head around. It is possible that Intel has massively improved multicore scaling, but that is not what we witnessed with a recent Passmark result, where the Core Ultra 7 255H portrayed healthy improvements over its predecessor in single-core, but not quite so in multicore.