PSU Has Two 8pin but SLI Requires Four

[SuckMyLittleFinger]

Hey guys!

My system has an EVGA SuperNova 650 G2 for the PSU. While building my rig I intended on buying a second GPU later on. I currently have one EVGA GTX 1070 FTW. A 650 watt is more then enough power for two 1070s.

Small hitch though... My GPU needs two 8 pin connectors. The 650 G2 only has two VGA ports which have one 8 pin, and one 6 pin each. Is it RIP SLI or are there any solutions for me 

 

Thanks guys,

Eric

[zMeul]

you could use molex to 8pin PCIe: http://www.newegg.com/Product/Product.aspx?Item=N82E16812423174&cm_re=molex_to_8-pin-_-12-423-174-_-Product

[SuckMyLittleFinger]

1 minute ago, zMeul said:

you could use molex to 8pin PCIe: http://www.newegg.com/Product/Product.aspx?Item=N82E16812423174&cm_re=molex_to_8-pin-_-12-423-174-_-Product

Would using only molex adapters supply me with enough power? 

Dumb question but I know nothing about these older cables

 

Thanks

[LordofSavages]

5 minutes ago, SuckMyLittleFinger said:

Hey guys!

My system has an EVGA SuperNova 650 G2 for the PSU. While building my rig I intended on buying a second GPU later on. I currently have one EVGA GTX 1070 FTW. A 650 watt is more then enough power for two 1070s.

Small hitch though... My GPU needs two 8 pin connectors. The 650 G2 only has two VGA ports which have one 8 pin, and one 6 pin each. Is it RIP SLI or are there any solutions for me 

 

Thanks guys,

Eric

I wouldn't leave GPU power connectors unplugged. That said there are ways to make it work but I wouldn't risk it since GTX 1070's draw a lot of power once overclocked

[Quaker]

39 minutes ago, SuckMyLittleFinger said:

Would using only molex adapters supply me with enough power?

I'm not sure what you mean by "only". In this case, you would use the two 8-pin PCIe connectors that are on the Power supply already (one for each card). And then use one MOLEX adapter on each card for the other 8-pin. This would work fine, but you would also then need 4 available MOLEX connectors for it to work.

 

Another alternative would be to use a 6-pin PCIe to 8-pin PCIe adapter on each card.

http://www.newegg.com/Product/Product.aspx?Item=N82E16812200420&cm_re=6-pin_to_8-pin_adapter-_-12-200-420-_-Product

 

-or-

 

http://www.ncix.com/detail/startech-com-pci-express-6-pin-59-61072.htm

 

These adapters work fine because the wires connecting them are more than adequate for the power draw. It's the connectors themselves that are the main power limiting factor because of the materials and contact area of the pins/sockets in the connectors.

[SuckMyLittleFinger]

7 hours ago, Quaker said:

I'm not sure what you mean by "only". In this case, you would use the two 8-pin PCIe connectors that are on the Power supply already (one for each card). And then use one MOLEX adapter on each card for the other 8-pin. This would work fine, but you would also then need 4 available MOLEX connectors for it to work.

 

Another alternative would be to use a 6-pin PCIe to 8-pin PCIe adapter on each card.

http://www.newegg.com/Product/Product.aspx?Item=N82E16812200420&cm_re=6-pin_to_8-pin_adapter-_-12-200-420-_-Product

 

-or-

 

http://www.ncix.com/detail/startech-com-pci-express-6-pin-59-61072.htm

 

These adapters work fine because the wires connecting them are more than adequate for the power draw. It's the connectors themselves that are the main power limiting factor because of the materials and contact area of the pins/sockets in the connectors.

Ah perfect I didnt even think to use a 6 to 8 pin adapter. Thanks for the reply