Raspberry Pi 3 B+ . stop trying to overclock

It’s been a while since I wrote any post related to Raspberry Pi. Largely because I can go from $200 to $300. am using Dell Optiplex Micro Computers from eBay. They cost more than the Raspberry Pi 3 B+, ​​but are available with 8GB (model 3050), 16GB or 20GB of faster DDR4 RAM, dual boot or RAID storage with SATA or NVMe SSDs, and more recent-generation Intel i3, i5 or i7 Can be custom configured. processor

As the title of this article goes, I’m not here to bash Raspberry Pi boards, at least not! They still have a big space. I mention Dell Optiplex Micros only because if you need As for overclocking the Raspberry Pi 3 B+, ​​there’s a good chance it won’t meet the performance requirements you’re looking for. Of course, there are other similar boards out there similar to the Raspberry Pi. However, if your project is small, or rather, suitable for this type of hardware, I would almost always recommend sticking with the Raspberry Pi.

Also, remember that many copy-cat boards are just that and all-for-profit. While the Raspberry Pi is being developed and sold Raspberry Pi Foundation, a charity founded in 2009 to promote the study of basic computer science in schools. A Dell Optiplex will never be as “cool” for kids as a Raspberry Pi. Which we can argue, works well with kids – even us adults – because it’s not intimidating to look at.

Raspberry Pi 3 B+ is already overclocked

By default, the first generation RPi 3 was underclocked. Thing is, I won’t waste your time or try to give any tips on how to overclock the Raspberry Pi 3B+ beyond the default 1.4GHz. That’s why so far, I haven’t written the article “How to Overclock Raspberry Pi 3B+”. Instead, I’d encourage owners of that board not to overclock to more than 1.4GHz.

If you are looking to overclock the first generation Raspberry Pi 3B, you can check out my previous RPi 3 overclock post. As for RPi 3b+ overclocking, I don’t have some good news. Depending on how you look at it, this could actually be good news. Good news if you want to overclock just because it’s possible and always want to max-out at a stable 1.4Ghz. There’s no good news if the RPi 3 B+ isn’t fast enough for your current application. In this case the RPi may not be the best fit for your project.

Unlike all those lines of configuration changes suggested in previous Raspberry Pi 3B First Gen posts, we’ll instead look at one area primarily to improve Raspberry Pi 3B+ performance and that is: cooling. However both the RPi 3B and the RPi 3B+ share the same underlying system-on-chip (SoC). The RPi 3 B+’s improved packaging allows for a 1.4GHz default overclock, with a heat-spreader.

Once your Raspberry Pi 3 B+ has a decent cooling solution, you can stop there because it means that under load your board will almost always operate at 1.4GHz!

Actually, the Raspberry Pi 3 B+ is already overclocked to run at 1.4GHz. that said, when the core Hit Time 60°C, it is throttled at 1.2 GHz, up to 1.1 GHz at 82 °C. Also, when idle, the Raspberry Pi 3 B+ only runs at 600MHz. With these in mind, we can achieve maximum performance while keeping the RPi 3 B+ cool and as an alternative You can also increase the idle operating speed.

To keep it cool, you can go the free route, use a standing fan that you may already have at home or put it in the direct path of your AC vent. Or you can invest in a cooling fan and/or cooling case. I can personally recommend iUniker Raspberry Pi 3 B+ ABS Case with Cooling Fan and Heatsink (cold but not too loud) or Raspberry Pi 3 B+ Case + Fan by iunicker (cold but a little loud). There are lots of good cooling options available, although there are some that are just as useless. So go shopping, or come up with free solutions that are often more rewarding.

Raspberry Pi 3 B+ . increase idle speed or enable turbo mode

Once your Raspberry Pi 3 B+ has a decent cooling solution, you can stop there because it means that under load your board will almost always operate at 1.4GHz! However, if you want to go a little further you can try adding one of the following lines to your config.txt. The latter is probably the only noticeable performance change of the two.

1) setting arm_freq_min=900 – This will increase the on-demand idle speed from 600 MHz to 900 MHz. Again, there’s really no reason to change it.

2) setting force_turbo = 1 – Which enables turbo mode frequency (1.4GHz) even when the ARM core is not busy. If over_voltage_* is also set, enabling it may set the warranty bit.

Don’t go crazy with the config.txt edits like on previous RPi boards. Stick with the default 1.4GHz, setup adequate cooling, and play with these two settings. Of course, there are tales of overclocking past the default 1.4GHz, but is the small gain really worth the trouble? I’ll leave it to you to decide.

Feel free to share your RPi 3 B+ setup including cost or details of free hacks to get stable overclocking speeds above 1.4GHz.

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