AMD today announced its Ryzen 4000-series mobile processors designed to compete with Intel's fastest, across both its 10th gen "Ice Lake" and "Comet Lake" mobile processors lines. At the heart of these processors is the 7 nm "Renoir" silicon, which doubles the CPU core count over the previous generation "Picasso," and improves IPC (single-thread performance) by a double-digit percentage. "Renoir" combines a CPU with 8 cores based on the "Zen 2" microarchitecture, with an iGPU that has the number-crunching machinery of "Vega," but with display- and multimedia-engines of "Navi." It is a monolithic piece of silicon with a dual-channel IMC that supports not just conventional DDR4 memory, but also fast LPDDR4X.

There are two distinct classes of Ryzen 4000 Mobile: U and H. The Ryzen 7 4800U, with its 15 W TDP, targets ultra-portable notebooks, and goes head-on against Intel's Core i7 "Ice Lake-U" processors, winning on the CPU front with its high core-count and IPC. The Ryzen 7 4800H, on the other hand, taps into the 45 W TDP headroom to dial up CPU and iGPU clock-speeds significantly, offering CPU performance that beats the desktop Core i7-9700K. It also introduces SmartShift, an iGPU + dGPU virtualization technology that lets your notebook dynamically switch between the two based on graphics load.