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Banana Pi BPI-M7 - More Reasons to Avoid the Raspberry Pi (www.cnx-software.com)
submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]
139 comments fedilink hide all child comments
 

The Banana Pi BPI-M7 single board computer is equipped with up to 32GB RAM and 128GB eMMC flash, and features an M.2 2280 socket for one NVMe SSD, three display interfaces (HDMI, USB-C, MIPI DSI), two camera connectors, dual 2.5GbE, WiFi 6 and Bluetooth 5.2, a few USB ports, and a 40-pin GPIO header for expansion.

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[–] [email protected] 17 points 11 months ago* (last edited 11 months ago) (1 children)

So it costs more up front, and it uses more electricity which costs more in the long term.

I don't need all the extra Pi accessories, I already have cables and chargers and SD cards. So for me, the price of a Pi is just the price of a Pi.

[–] [email protected] 2 points 11 months ago* (last edited 11 months ago) (2 children)
  • HP Mini with an i5 8th gen = 35W
  • RPi 5 = 27W

Do you really think that will make a difference. For what's worth how much do you pay to have a 35W device running all year? In my case I'm paying a crazy 0,157€/kW... Amounts to 35/1000*24*365*0.157 = 48.14€/year considering a full load that the machine never has.

[–] [email protected] 6 points 11 months ago (1 children)

The max Power consumption often does not matter on devices that run 24/7 more important is the idle powet consumption. Here are SBCs and ARM Chips in generell way better.

I had my Pi 3B+ down to under 5W on idle having various services running. I can not speek for newer Pi versions but i would estimate them still lower then 8W on idle. That is really hard to beat with an normal PC. Maybe the Mini PC with newer Mobile or integrated CPUs are getting in this region.

Not quite sure where you got the 37W for the HP Mini.

[–] [email protected] 4 points 11 months ago (1 children)

Lmao did you just compare the highest possible power consumption on a Pi with the lowest possible consumption on a desktop PC?

[–] [email protected] -2 points 11 months ago* (last edited 11 months ago) (1 children)

Lmao, do your research before commenting stuff like that.

TDP 35 W Thermal Design Power (TDP) represents the average power, in watts, the processor dissipates when operating at Base Frequency with all cores active under an Intel-defined, high-complexity workload. Refer to Datasheet for thermal solution requirements.

Here's how things look on the HP model above:

  Model name:            Intel(R) Core(TM) i5-8500T CPU @ 2.10GHz
    BIOS Model name:     Intel(R) Core(TM) i5-8500T CPU @ 2.10GHz To Be Filled By O.E.M. CPU @ 2.0GHz
    BIOS CPU family:     205
    CPU family:          6
    Model:               158
    Thread(s) per core:  1
    Core(s) per socket:  6
    Socket(s):           1
    Stepping:            10
    CPU(s) scaling MHz:  23%
    CPU max MHz:         3500.0000
    CPU min MHz:         800.0000

Obviously that thing wont be running at base frequency while idling. Here is one if units right now:

analyzing CPU 0:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 4294.55 ms.
  hardware limits: 800 MHz - 3.50 GHz
  available cpufreq governors: performance, powersave
  current policy: frequency should be within 800 MHz and 3.50 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
  current CPU frequency is 800 MHz.

See, it scales down to 800Mhz with a watt meter I remember it translated to idling at around 10-11W.

I never said it was better than a Pi, I just said the difference is not worth it and you're still ignoring the fact that i5-8500T will be able to do a LOT more work than the RPi5 could do while keeping the CPU bellow or at 2.1 GHz - not surpassing the 35 W TDP.

[–] [email protected] 3 points 11 months ago (1 children)

Okay got it, so you compared the highest possible TDP on a Pi with the average/idle TDP on a desktop, and you're acting like that's a fair comparison. Thanks for clearing that up!

[–] [email protected] -2 points 11 months ago* (last edited 11 months ago) (1 children)

No... I compared the highest possible TDP on a Pi with with the average TDP of a "T-CPU" (power-optimized) running at full load and I concluded by saying a realistic idle consumption is 11W.

Look I'm sure the Pi does a lot better than 11W idle, but at those such low consumptions is is mostly irrelevant. I also added that given load X (equivalent to the Pi CPU at max load) the Intel CPU will make make it without reaching even the 35W while the Pi is going to be running at a full 27W.

[–] [email protected] 0 points 11 months ago

TDP != Power consumption.