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Can I use my non-modular 750w PSU for an RTX 4080?

DinocoBlue171
By DinocoBlue171
in Power Supplies
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Go to solution Solved by Shimejii,

I would recommend you get a new PSU with at minimum 3 PCIE cables, or a PSU with the new connector Built in. I would not use a pigtail for a 4080, i would give it dedicated power plug for each adapter.

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I have a non-modular 750w Cooler Master PSU with 80 plus platinum (from an HP prebuilt) that uses two 6+2 cables to a 12 pin adapter for my 3070. Can I use this PSU for an RTX 4080 with an adapter?

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12 minutes ago, DinocoBlue171 said:

I have a non-modular 750w Cooler Master PSU with 80 plus platinum (from an HP prebuilt) that uses two 6+2 cables to a 12 pin adapter for my 3070. Can I use this PSU for an RTX 4080 with an adapter?

 

RTX 4080 uses 3x PCI-E 8-pin to 12-pin connector.

You want to use three separate cables, rather than daisy-chain cables.

RTX 4080 is a ~320W card, and 2x PCI-E 8-pins only gives 300W.

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Posted
27 minutes ago, -rascal- said:

 

RTX 4080 uses 3x PCI-E 8-pin to 12-pin connector.

You want to use three separate cables, rather than daisy-chain cables.

RTX 4080 is a ~320W card, and 2x PCI-E 8-pins only gives 300W.

 

75W from the slot though, right?

 

Regardless I would probably want to get a new PSU. 

Your "PC master race" thing is cringe. 

 

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20 minutes ago, Middcore said:

 

75W from the slot though, right?

 

Regardless I would probably want to get a new PSU. 

 

Supposedly, but apparently the RTX 4000-series only pulls ~20W (or less?) from the PCI-E slots.

It's basically all through the 12-pin.

 

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Intel Z97 Rig (Decomissioned)

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Posted
Just now, -rascal- said:

 

Supposedly, but apparently the RTX 4000-series only pulls ~20W (or less?) from the PCI-E slots.

It's basically all through the 12-pin.

 

 

An amazing advancement in design. /s

Your "PC master race" thing is cringe. 

 

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