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09-22-2016

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Compatible power supply for a Thinkstation S20

2021-01-11, 19:02 PM

I want to install a Rog Strix RTX 2080 Super in my Thinkstation s20. Nvidia says that the power supply is too low to power the board (625W), and says I need 650W instead. Is there a compatible power supply that will work to power up everything? Attached is what is currently in the PC right now.

 

Edit: This is the power supply I'm thinking of getting:

https://www.amazon.com/gp/product/B0838YDBP3?pf_rd_r=6BJVGV4A1764QFH5M55W&pf_rd_p=5ae2c7f8-e0c6-4f35-9071-dc3240e894a8&th=1

 

Will that work?

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Re:Compatible power supply for a Thinkstation S20

2021-01-12, 1:25 AM

Nvidia always over estimates the power its power needs, so 625W will probably work just fine to power your 2080   

 

Per Nvidia, the 2080 Super's max power usage is 250W, so you still have 375W to power up the rest of the hardware in the system, which should be plenty.

 

Cheers,

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Re:Compatible power supply for a Thinkstation S20

2021-01-12, 13:13 PM

I'm actually going to disagree here.  The S20 power supply uses a single 12V rail for powering graphics, and was originally designed to support up to 225W TDP GPUs.  However the key attribute is the high input EDP rating for the 2080 Super as that could potentially cause issues while under heavy load.  My 2080 Super specs are somewhat outdated and don't have peak EDP measurements listed, but the continuous EDP ratings are above that which can be supplied by the single 12V rail driving the PCIe power drops on the S20 PSU.

 

If the S20 PSU had 2 rails driving those PCIe power drops, then I wouldn't be concerned.  But because it's a single rail there, I'm worried over current conditions could be encountered under load.  Obviously this is merely a spec evaluation, so your mileage may vary based on real world workloads/conditions.

 

 

The alternate power supply suggested doesn't call out the specs for how the internal rails are designed and laid out.  You'd really need more detailed info on that PSU to determine if it would be capable of driving the GPU in question.  At a high level, it doesn't have the proper CPU power connections by default...so you'd have to dongle those to get them to connect to the S20 motherboard.  It also appears there is a single 8 pin connector for PCIe power, which likely also indicates a single 12V rail (though it could be spec'd fairly high compared to the S20 PSU) and will require a power splitter to get the proper 8+6 connection for the 2080 Super.  Based on 30 seconds of reading the reviews on that page, I'd probably suggest continuing your search for a better power supply.




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8 Posts

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Re:Compatible power supply for a Thinkstation S20

2021-01-12, 16:48 PM

I just now read your post earlier I checked the power cables and found exactly what you mentioned here - there is only one 8-pin connecter on the PSU and the card needs 2. Thank you very much for your help. I'll just stick with what I have and save up to get/build a better PC Build. 

 

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