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The AMD 4900U has similar power consumption and higher multi-threaded performance, but lower single-threaded performance. I expect the AMD part to have quite t
by robert_foss 6y ago
The AMD 4900U has similar power consumption and higher multi-threaded performance, but lower single-threaded performance.
I expect the AMD part to have quite the bit lower GPU performance since it uses 1/3 of the transistors of the M1, 4.9billion transistors vs 16billion.
https://wccftech.com/intel-and-amd-x86-mobility-cpus-destroy-apples-m1-in-cinebench-r23-benchmark-results/ https://wccftech.com/intel-and-amd-x86-mobility-cpus-destroy...
- pclmulqdq 6y agoAMD CPUs are very hard to fully utilize with a single thread, and Intel has always held the single-thread perf crown. Most high-performance use cases are multi-threaded now, so the single-threaded performance delta isn't that significant. The Apple chip is really built for running a snappy GUI: in most of those cases, you need to run ~1M instructions super fast on one thread for a short time. Intel has historically had the crown on this metric, but not any more with all of their problems.
- robert_foss 6y agoAMD Zen3 outperforms everything Intel has in single threaded performance. https://wccftech.com/amd-ryzen-9-5950x-16-core-zen-3-cpu-obliterates-all-intel-cpus-in-single-core-performance/ https://wccftech.com/amd-ryzen-9-5950x-16-core-zen-3-cpu-obl... Or are you saying that some operations like FMAs for example are hard to keep a high utilization for?
- sliken 6y agoHistorically yes, but not so with the Zen3.