Solar/Batter Powered GPU

gadgetgeorge · Nov 10, 2013

So, what's the latest, efficient technology for producing high-wattage DC power from solar power and a bank of batteries?

I need to install a device that's has dual 6-pin PCI-E power connectors on it in a outdoor location far away from AC power. It's going to be in a weatherproof shed where I have plenty of room for lots of solar panels and batteries to store excess solar for overnight use.

The hard part seems to be finding the products that can take power from the batteries and put it onto the 2x6pin connectors.

mcdonh · Nov 10, 2013

why don't you just source the solar panel output to the psu?

gadgetgeorge · Nov 10, 2013

mcdonh :

I could do that. But, since solar panels and batteries are both natively DC it seems more efficient to avoid using a traditional AC/DC power supply. There's the power-losing inefficiency in converting from DC to AC to go into the PSU, then a second power-losing inefficiency when the PSU converts from AC back to DC.

Any inefficiency is lost as heat, which is more work for the solar/battery powered ventilation.

hunter315 · Nov 10, 2013

If you want clean stable power i would have the solar panels charge a battery array, then run that through an inverter and then into the PSU, batteries aren't super clean, especially when you are charging them at the same time and the GPU might not appreciate the line noise. The inverter would be the lossiest part of the system, i would go for at least an 80+ gold PSU to go with it just to minimize additional losses since they matter in this scenario.

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Solar/Batter Powered GPU

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