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Old 12-01-2017, 10:46 PM   #41 (permalink)
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Originally Posted by Daox View Post
This is a 'next step' deal, but I am considering getting a new power supply for the computer. There doesn't seem to be a great selection of power supplies for a low power system like this. PC parts picker estimates my max power consumption at ~130W. I kind of doubt it'll even get that high. I'm obviously looking for something as efficient as possible as well. Any suggestions?
Depends how far you want to go. At the heart of it, a computer power supply is just giving 12v, 5v, and 3.3v. Solar panel + charge controller + deep cycle battery + bunch of voltage regulators? Or just buy the best bang for your buck ps that is rated at least 80 plus gold.

How much is this pc going to be operating?

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Old 12-02-2017, 12:35 AM   #42 (permalink)
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If I were to move beyond the 2nd hand NUC market, I'd be looking at the Beaglebone X-15:

https://beagleboard.org/x15

The board is US$269. The recommended power supply is US$24. It appears to have a lot of headroom.

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BeagleBoard-X15 is the top performing, mainline Linux enabled, power-users’ dream board with a core tailored for every computing task and a highspeed interface for every connectivity need. Give your algorithms room to stretch!
Processor: TI AM5728 2×1.5-GHz ARMŽ Cortex-A15

2GB DDR3 RAM
4GB 8-bit eMMC on-board flash storage
2D/3D graphics and video accelerators (GPUs)
2×700-MHz C66 digital signal processors (DSPs)
2×ARM Cortex-M4 microcontrollers (MCUs)
4×32-bit programmable real-time units (PRUs)

Connectivity

2×Gigabit Ethernet
3×SuperSpeed USB 3.0 host
HighSpeed USB 2.0 client
eSATA (500mA)
full-size HDMI video output
microSD card slot
Stereo audio in and out
4×60-pin headers with PCIe, LCD, mSATA
It would fit in a Mac Mini case I have already!
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Old 12-02-2017, 01:10 PM   #43 (permalink)
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Quote:
Originally Posted by ksa8907 View Post
Depends how far you want to go. At the heart of it, a computer power supply is just giving 12v, 5v, and 3.3v. Solar panel + charge controller + deep cycle battery + bunch of voltage regulators? Or just buy the best bang for your buck ps that is rated at least 80 plus gold.

How much is this pc going to be operating?
I am willing to make this a small fun project, but not a huge one. I've been poking around on 80plus.org, and there are a number of power supplies from Dell, HP, or Lenovo that could likely get me into the 90% range most of the time, and they aren't very expensive either. However, I know some come with non-standard connectors on them that would need to be changed over to the standard ATX connectors.

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