The Intel Core Ultra 9 285 is the objective winner of this comparison, securing victory in nine of the sixteen evaluated categories. Its most significant technical advantage is its E-core count, which is 100% higher than that of the alternative. While the Intel Core Ultra 5 245KF maintains a notable lead in base clock speed, which is 68% better than the higher-tier model, it ultimately falls behind in the majority of the measured specifications.

Users prioritizing multi-threaded efficiency and high core density should select the Intel Core Ultra 9 285 to leverage its superior E-core configuration. Conversely, the Intel Core Ultra 5 245KF is the better choice for those who specifically require the higher base clock speed provided by that model. Your decision should depend on whether your workload benefits more from the increased core count or the faster base frequency offered by these respective processors.