Tiger Lake + Renoir On Ubuntu Linux For Battery vs. AC Performance
Written by Michael Larabel in Computers on 23 November 2020. Page 2 of 8. 39 Comments

Next up is WebXPRT within Firefox, one of the browser benchmarks used by Intel in last week's presentation.

The WebXPRT performance on the Core i7 1165G7 was indeed the same regardless of power source. But the Ryzen 5 4500U in its default battery state was at 61% the connected performance.

When looking at the CPU peak frequency data for this test, the 4500U laptop was at a 1.6GHz average on battery versus 1.8GHz connected to AC power. But most noticeable is on battery for this test the 3.9~4.0GHz boost clock speed was not being achieved - the highest recorded clock speed was 2.4GHz during this test.

Running WebXPRT under Chrome did lead to a similar outcome.

With Jetstream 2 running under Chrome, the Tiger Lake laptop was at 96% the performance when on battery while the Ryzen 5 4500U was at 76% the performance. The boost clock was being hit for the Ryzen 5 4500U while on battery but the average clock speed dropped from 2.9GHz to 2.6GHz.


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