system76 / laptop-suggestions

Repo to collect laptop design suggestions and feedback as issues.
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AMD Rembrandt Zen 3+ RDNA2 #148

Open GreyXor opened 2 years ago

GreyXor commented 2 years ago

The AMD Ryzen 7 6800U is a processor for thin and light laptops based of the Rembrandt generation. The R7 6800U integrates all eight cores based on the Zen 3+ microarchitecture. They are clocked at 2.7 (guaranteed base clock) to 4.7 GHz (Turbo) and support SMT / Hyperthreading (16 threads). The chip is manufactured in the modern 6 nm process at TSMC. Compared to the similar R7 6800H, the 6800U offers a lower base clock speed and a lower TDP.

The new Zen 3+ is a refresh of the Zen 3 architecture and should not offer a lot of changes. The chip itself however, offers a lot of new features, like support for USB 4 (40 Gbps), PCI-E Gen 4, DDR5-4800MT/s or LPDDR5-6400MT/s, WiFi 6E, Bluetooth LE 5.2, DisplayPort 2, and AV1 decode.

The processor performance should be clearly better than the old Ryzen 7 5800U thanks to the improved clock speed. However, the new Alder Lake U and P-series CPUs, like the i7-1280P, should offer a higher performance.

A big novelty is the integrated GPU Radeon 680M, that is now based on the RDNA2 architecture and offers 12 CUs at up to 2.2 GHz. It should be the fastest iGPU at the time of announcement.

The TDP of the APU is specified at 15 - 28 Watt (default). The power efficiency should be very good, thanks to the improved 6nm process and additional power saving features in the 6000 series.

https://www.notebookcheck.net/AMD-Ryzen-7-6800U-Processor-Benchmarks-and-Specs.589897.0.html

GreyXor commented 2 years ago

https://www.youtube.com/channel/UCJeQuSEYPNnYD75KA4K0fRA/videos to see some 3D benchmarks