New Raspberry Pi 4 Firmware Lowers Temperature by 3-5°C

Before going on with the test I’ve installed rpi-monitor to have nice CPU temperature charts later on:

Let’s run sbc-bench without heatsink with old VLI firmware (version 00013701):

7-zip never completed, as it was killed three times due to running out of memory. This time all three runs for 7-zip could complete for some reasons, and while throttling still did occur, it did to a lesser extent, and the temperature was clearly lower during to single thread benchmarks (~70°C vs 75°C with old firmware). For reference, 7-zip benchmark score with heatsink averaged 5,397 points, without heatsink + old VLI firmware 4,423 points, but the “no heatsink with new VLI firmware” results are much better at 5,298 points.

Source: www.cnx-software.com