Review result that 'Raspberry Pi 4' can be improved with new firmware though there is concern about fever
Raspberry Pi's latest model '
Open Letter from the OpenID Foundation to Apple Regarding Sign In with Apple | OpenID
The 'Raspberry Pi 4 Model B' is the latest model of Raspberry Pi that supports 4 fps of 60 fps, and it is a single board computer that is attractive for the price of $ 35 (approximately 3750 yen) with the cheapest 1 GB model.
New 'Raspberry Pi 4' comes up with 4K support & CPU speedup and other specifications-GIGAZINE
Jean-Luc Out Frank bloggers got such a Raspberry Pi 4 is, at once the benchmark test was performed where tried, found that there is a case in which CPU performance becomes lower than the Raspberry Pi 3 model B Did.
Seeing that this was due to
This is the result of the test with the heat sink attached. From left to right, the benchmark results for memcpy, memset and
In the memcpy · memset test, the score of 'with Raspberry Pi 4 heat sink' is slightly lower is 'a mere error'.
The result of this review by Aufrank seems to have caught the eye of the Raspberry Pi Foundation, and it is said that Aufrank received a direct email from the Foundation's representative, Even Upton. The email includes a message that 'The new firmware for Raspberry Pi 4 contains improvements to optimize heat generation,' along with a test version of the pre-release firmware, afrank said. Introduced and retested.
Aufrank first performed a 7-zip benchmark with 'no new firmware or heat sink' for comparison, and checked the temperature of the Raspberry Pi 4's CPU with RPi-Monitor . As a result, in the benchmark test performed between 11:26 and 11:30, the temperature of CPU jumped to 80 degrees or more.
After that, when I introduced the latest firmware, the effect came out immediately. As a result of the firmware being introduced at the timing indicated by the green line, it can be seen that the temperature at idle has dropped from around 65 degrees to around 60 degrees.
And this is the result of another benchmark run. As in the last time, the temperature of the CPU has risen sharply, but even at high temperatures, it can be seen that the problem of heat generation has been slightly solved up to 82 degrees.
The benchmark result is more remarkable, the score of “heat sink + old firmware” is 4423 points, the score of “heat sink + new firmware” is 5397 points, and the score of “heat sink no new firmware” is 5298 points. From this, it can be seen that applying new firmware can achieve sufficient performance without a heat sink.
The new firmware is about the 'VIA VL805 PCIe USB 3.0 controller' that controls the USB 3.0 interface of the Raspberry Pi 4. According to Alfrok, the article is being created as early as several days or as soon as several weeks at the latest. Is expected to be released to
in Hardware, Posted by log1l_ks