Race to sleep gulps power for a short time then goes dormant. Pick a strategy: Lean hardware or race to sleep. For the LED in the network port, cutting the right trace is easier but nit fie the faint of heart. Even unsoldering a 20 mW LED adds up (0.18 KWh per year). Run iotop during the next query to review this.įirst remove unneeded things. The main difference is an SSD is so fast it can be active (2-6W) for less time than a platter drive.īecause the pi 3 SOC is connected to the world only via USB2 (network and drives are all via a usb 2 bus), your database query could be IO limited instead. A well managed platter hard drive, with the motors off (drive parked) consumes less. SSDs consume 1 to 5 watts idle, unless set to a sleep state. I have a laptop with an EMMC as oem gear, and adding an SSD cuts the battery life 30%. In the long run, you can save quite a bit with these small measures.Ī lot of people are surprised to learn that SSDs consume multiple watts. These are also things that you can notice/measure. I also deactivated the LED on my Fritz!Box, which also reduces power consumption. As mentioned, no idea what the SATA adapter consumes. It's not nice if you can't deactivate certain things or if you can't find any power consumption for the devices. The power consumption is excellent compared to a real server. That was the Kuaufgrund, other models may be better for other applications. Most of the time the Pi is in IDLE, but 30 minutes database query takes too long for me. I use the Pi for larger database queries and the CPU has always been very busy. I've disabled it and don't need it, but I have. Same chip as Pi2 Model B, but slightly better values and WifiBluetooth. A data server should run 24/7, run scripts from time to time and query large databases at the same time, which is why more RAM/CPU power was needed. But that won't be worth it either.Įnergy costs are under 10 euros a year, but if you have the Pi 5 or 10 years and run it 24 hours a day (data server).Īccording to this page, the Pi3B had Pi3 has low power consumption with very good performance If I reduce that, maybe then it could also reduce the power consumption a bit. The power consumption also jumps from 2.8 watts to 3.1 watts, which probably has to do with the write accesses of the SSD. The SSD alone seems to accounts for about one watt. I expected the SSD not to consume that "much". A connected LAN cable also increases power consumption by about half a watt? Power consumption depends on what's connected/enabled/switched on or not. There is information on the Internet, but unfortunately the power consumption of many products is not broken down more precisely. I expected this consumption (without SSD). You could spend $300 upgrading and not get below 2W for a network connected server. Newer lithography, minimal added hardware and power use. You could add a 'wake' button and a shutdown function. Likely unable to set that brightness or on/off. You could desolder the blue LED because it is probably connected 5v to LED to resistor to GND. And holding RAM active uses power, whether the system uses it or not. A Pi Zero or Zero2W would use less power, but have less ram. I'l say that being under 4 watts idle power is a good place to be. It depends on what you'd like the system to do. Maybe also recommendations for hardware that consumes less power. A 22 nm lithography, an SOC without Sleep/Idle states below downclocking 55%, and multiple hardware needs that call for extra power for server needs. My Pi 3b (not plus) uses more than that, but I have not engineered lower power.įor all that the Pi 3b is probably the sweetest pi, it is not super low power. You're at a lower power consumption than I would expect. The best thing? The base model is only $20 $5!.ĭo you know a related subreddit? We'd love to know. Welcome to /r/raspberry_pi, a subreddit for discussing the raspberry pi credit card sized, ARM powered computer, and the glorious things we can do with it. Pi project ideas: There's a huge list right here on this sub! Friendly reminder: Please don't just post pictures of unused pis - do a project!Ĭomplete r/raspberry_pi Rules Check the FAQ and Helpdesk here
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