Don’t PCI-e ports only provide up to 150W per port? How is it that a 3 x 8-pin (or 2 x 8-pin for that matter) cable can be sufficient to power GPUs that require up to 600W at peak?

Don’t PCI-e ports only provide up to 150W per port? How is it that a 3 x 8-pin (or 2 x 8-pin for that matter) cable can be sufficient to power GPUs that require up to 600W at peak?
joe4:44 amNovember 21st, 2022
Don’t PCI-e ports only provide up to 150W per port? How is it that a 3 x 8-pin (or 2 x 8-pin for that matter) cable can be sufficient to power GPUs that require up to 600W at peak?

In truth, an 8-pin PCI-e port on modern PSUs can supply over 300W of power each (up to 342W, depending on model). Thus, two 8-pin PCI-e ports are more than enough to provide the required 600W. We provide both 3 x 8-pin and 4 x 8-pin versions of this cable for extra redundancy.

**Please note that all 8 Pin PCI-e plugs need to be plugged in for the cable to function properly. If you order a 2 x 8-pin, 3 x 8-Pin, or 4 x 8-Pin to 16-Pin, make sure that all of the 8-pin connectors are connected correctly to your PSU.**

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