Core i5-11400 (Rocket Lake-S): 6 cores/12 threads, 2.6GHz to 4.4GHz, 12MB L3 cache Core i5-10400 (Comet Lake-S): 6 cores / 12 threads, 2.9GHz to 4.3GHz, 12MB L3 cache So if we take this leak as the gospel truth, the Rocket Lake-S part has a 300MHz lower base clock and a 100MHz higher turbo clock, with the same amount of L3 cache. However, this is undoubtedly an engineering sample, so the final specifications could change. It's not just about clocks and cache, though. Rocket Lake-S will bring some notable improvements to the table, including PCI Express 4.0 support (up to 20 lanes), increased memory speeds of up to DDR4-3200, Xe graphics, and enhanced performance by way of using Cypress Cove cores.