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Ryzen Mobile Doubles CPU Count

January 28, 2020

Author: Bob Wheeler

After capturing a significant share of value laptops, AMD is pushing into the premium ultrathin segment with a new generation of U-series Ryzen mobile processors code-named Renoir. Using the Zen 2 CPU and 7nm technology, they boost 15W (TDP) laptops to new performance heights, particularly for multithreaded workloads. The new design also takes to greater speeds AMD’s H-series processors for 45W integrated-graphics designs. Renoir replaces the 12nm “Picasso” that’s been shipping since 1Q19 in Asus, HP, and Lenovo systems.

The Ryzen 7 4800U is the new U-series flagship, boasting eight cores and 16 threads—double those of the earlier Ryzen 7 3700U. To pack that many CPUs in a 15W envelope, the 4800U has a modest 1.8GHz base clock speed but offers turbo speeds as high as 4.2GHz. It has 12MB of total cache and integrates a Radeon Vega GPU with eight compute units (CUs). At the top of the H-series, the Ryzen 7 4800H is similar except it has seven CUs and takes advantage of its 45W TDP to accelerate the base clock to 2.9GHz. The two families share a new package and add support for LPDDR4X memory. AMD says the first laptops using Renoir will ship this quarter.

We await independent benchmarks, but the company’s performance claims indicate that the 4800U leapfrogs Intel’s 10nm Ice Lake processor for ultrathin notebooks and that the 4800H outperforms the 14nm Coffee Lake for gaming notebooks. Renoir also completes the Zen 2 rollout across AMD’s PC-processor lines.

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