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LordMacrae

2 sata to 1 6-pin adapters? Safe? Max wattage?

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Posted · Original PosterOP

I've seen various threads and articles saying using a sata to 6-pin adapter could be dangerous as they'd only be safe to deliver up to 54W. However I cant find much that take two sata to one 6-pin adapters, would these be safe up to 108W? I'm considering getting a GTX 1650 Super on launch, and their TDP seems to be 100W.

 

My HP prebuilt has a proprietory PSU (320W) and mobo, but I have 3 sata power outputs free (two on one cable, and one on the cable powering the SSD). Surely I'd only need to provide a max of 25W through the 6-pin connector as the card would take 75W from the PCI-e slot?

 

Does anyone have any experience of these?

 


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5 minutes ago, LordMacrae said:

I've seen various threads and articles saying using a sata to 6-pin adapter could be dangerous as they'd only be safe to deliver up to 54W. However I cant find much that take two sata to one 6-pin adapters, would these be safe up to 108W? I'm considering getting a GTX 1650 Super on launch, and their TDP seems to be 100W.

 

My HP prebuilt has a proprietory PSU (320W) and mobo, but I have 3 sata power outputs free (two on one cable, and one on the cable powering the SSD). Surely I'd only need to provide a max of 25W through the 6-pin connector as the card would take 75W from the PCI-e slot?

 

Does anyone have any experience of these?

 

Make sure you read the motherboard manual, some of these prebuilts don't output 75w to the PCIe slot.

 

If its like the prebuilts Ive worked with, when I use an adapter I pull from individual sata rails coming out of the PSU/mobo depending just how proprietary the PC.  


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The individual sata connectors are rated for MAXIMUM 1.5A per contact. So, you have 3 contacts for each voltage in the SATA connector, so on the 12v the SATA connector can in theory transfer 3 x 1.5a x 12v = 54w

In reality the quality of the connectors on the adapters varies significantly ... the cheap molded connectors (the connectors where the housing is molded over the wires) should not be used for more than around 25-30 watts in my opinion

If the adapter has two SATA connectors, it's better because the amount of power taken by the video card is equally split between the connectors so they're less "stressed"

 

In your particular case, you should be fine. That video card is probably gonna average around 80-100w, and will probably take 40-50w through the pci-e slot, so only around 50w will be taken from the additional pci-e connector.

The TDP doesn't mean the card will consume that value.

 

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