4090 cables and psu advice

bigbob1

bigbob1

bigbob1

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I received my zotac 4090 today but I'm so confused, the cables that come with it suggest you need 4x pcie power connectors, my psu only has 2,thw cables also don't seem to fit my psu, do I need a certain brand?

Sorry it's such a n00b question I've been out of the loop for a while and I'm a bit confused.

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bigbob1 said:
I received my zotac 4090 today but I'm so confused, the cables that come with it suggest you need 4x pcie power connectors, my psu only has 2,thw cables also don't seem to fit my psu, do I need a certain brand?

Sorry it's such a n00b question I've been out of the loop for a while and I'm a bit confused.

ibb.co

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You should have the cables that came with your PSU which go in those blue fittings and then lead to the graphics card.

At that point your 4 plugs on those cables, would go into the small adapter cable that came with your graphics card.

What model PSU is it? It's worth checking it's good enough to handle the 4090 which is a chunky card.
 
Looks like a Silverstone PSU? They appear to like blue PCI-E outputs.

SST-ET750-HG/SST-ET650-HG/SST-ET550-HG from comparing pictures.

Digging on the Silverstone website they state several times that a single PCI-E PSU outlet is only capable of 150W.

The maximum you can draw from 2 x PCI-E out plus the PCI-E motherboard slot is 375W. Which means if it is a Silverstone PSU of 750W or below then an RTX 4090 is not going to work.

Corsair for example on all of their recent type 4/5 PSUs support 300W per PCI-E cable so you can supply enough power from just 2 PCI-E PSU outputs.
 
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