Soon after the Raspberry Part 3B + release day (π day, 2018.3.14), the author has been lucky to get a plate, the box is still as small as ever, than the cigarette case, it is very simple, the board is a piece, other accessories For this kind of educational board, it is a little one. The low price is also the biggest selling point. At the same time, it can use the old-free TF card, data cable, charging head and other items, DiY some small well-smashed It is endless.
3B + Based on 3B upgrade, where is upgraded, how big is upgraded, with some curiosity, use it, record the process, to make a video all-round analysis 3B +, including:
First, the product box. (00:00 - 01:30)
Second, 3b + board details, and 3b controls. (01:32 - 03:51)
Third, the function is upgraded to the actual test, the measured data is compared.
SOC performance test and comparison. (03:52 - 12:36)
Wireless signal testing and contrast. (12:37 - 17:39)
WiFi network speed test and contrast. (17:40 - 23:14)
Limited network speed test and contrast. (23:15 - 27:44)
The U disk is started. (30:11 - 37:00)
For a long piece for 38 minutes, have you interested, you can jump and see a clip.
This article uses the Raspberry School 3B + test environment:
All tests use the Raspbian 2018.3.13 Lite system
Toshiba Exceria 32GB TF card
5V 2.4A DC power, millet USB data cable
Huawei Gigabit Glory Road 2
SOC performance test
The Raspberry Part 3B + relative to 3B, SOC upgrade is mainly temperature heat dissipation optimization, the performance improvement in the medium, the main frequency 1.2g is increased to 1.4g, the increase of 16.7%, the performance increase is around 16%, obvious It is a chip temperature than 3B low a foot 10 degree. Personally, this optimization is still more suitable for such small plates, itself without a heat dissipation device, if the temperature is not controlled, it is likely to high temperature heat shutdown; 3B + When the chip temperature is high, the chip performance is reduced to exchange the low temperature and stable working state. Cancer. If the heat dissipation conditions are good, performance can be fully utilized.
Wireless signal test
The upgrade of the antenna is mainly the WiFi signal that can be accepted.
WiFi network speed test
Wired network speed test
summary
3B + network has the most obvious improvement, whether it is a WiFi network speed, or the upgrade of cable network speed, flush, or even more than three times. A 5G WiFi network has also been added.
3b + also adds the PoE interface, which can be powered over the network. The outer casing can use 3B housing, and a relatively practical function is to start from USB, although slow, it is better than nothing.
The Raspberry Part 3B + just started to be listed, the price is not more than 3B expensive, if it is more like WiFi network speed cable network speed, 3b + is the most suitable, and 3B + chip temperature optimization, USB start, very practical, PoE though I don't know how to use it, there is always a good time, I feel that 3b has no advantage, what do you think?
Author's trial period running Unix Bench test 7 rounds, only 8 hours of test time, and also tested heat dissipation, power supply, power supply line, and promoting 3B + performance. Conclusion: Good heat dissipation has improved performance, although 3B + temperature is not very high, the performance of cooling is still improved. The power supply, the quality of the power supply line directly determines 3B + performance level. High quality supply line 3b + performance can be played.
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