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0 pointsbullen5y ago0 comments

They are much faster because they draw more energy.

The Raspberry 4 at 1 Gflops/watt is a better option if you want to power the thing with lead acid batteries as backup power for more than 24 hours.

Also Raspberry 4 can be cooled passively with a smaller heatsink so the total size and weight is less.

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ClumsyPilot5y ago

PI's are not really power efficient - their CPU is made on super-obsolete 40nm node. They have no sleep mode, or any low-power mode for that matter. Imagine how long a phone would last on that battery - its the same class of CPU.

An Intel compute stick or beelink mini pcs are also passively cooled and weigh no more.

bullenOP5y ago

Nope 28nm for the Raspberry 4. And 5nm is not going to save you that much energy compared to 28nm, it will however make the circuit much more fragile.

The Raspberry 4 is peak power efficient: http://web.eece.maine.edu/~vweaver/group/green_machines.html

Mobile phones don't have a keyboard, you can only consume with them. I produce things.

Those sticks don't have a company with it's own GPU and linux (Raspbian now RaspberryOS) behind them and they cost more per watt for performance I don't need.

However I have 2x NUC with Streacoms passive case: https://streacom.com/products/nc2-fanless-chassis/

kingosticks5y ago

28nm vs 5nm, is what, 3 generations with a 20-30% power saving at each step. ~50% power reduction is something.

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