R9 390 Connecters

[SlickyNicky]

i have the Antec EA 750 Watt PSU. it has a connector that has one 6 Pin and Connector and one 8 Pin connector. i want to get the Sapphire Nitro R9 390, but ive heard that it requires two 8 pin connectors. so other 390s require two 8 pin connectors. is that only the Sapphire Card? what do other 390s Require?

 

[bignastyid]

According to the specs of that PSU it has 2 6+2 pin connectors and 2 6-pin. The 2nd 6+2 pin connector is modular so look in the box for the cable.

 

[InvalidError]

Since the R9-390/390X peak at over 300W, you can expect the 8+8 configuration to be fairly common.

Many of those 8+8 boards will include a 6-to-8 adapter and should be fine if you power each connector from separate cables from the PSU, assuming your PSU is of adequate quality and nominal rating - which should not be a problem for the EA750.

 

[SlickyNicky]

what does modular mean?

 

[InvalidError]

what does modular mean?

In this context, it means the connector is split in two parts: you have the "main" parts with has a 2x3 pins arrangement and another "+2" part that snaps next to it to form the full 2x4 connector. They are often called "6+2" connectors and are functionally exactly the same as a solid 8-pin connector, except for the ability to fit them on a 6 pins plug.

 

[bignastyid]

what does modular mean?

The PSU is Semi-modular which means some of the cables are permanently wired to the PSU and the rest can be plugged into the unit when needed. The extra cable would have been in the PSU box. That unit only has 3 modular cables 1 is for the pci-e power and the 2 are extra sata power cables.

 

[SlickyNicky]

there's a modular 8 pin connecter and on the PSU there is a 2 6 pin slots. i have an extra cable that has 8 pins on one end and 2 6 pin connectors on the other. could i use the extra cable and plug the 6 pin connecters together and use the other 8 pin on the end to Plug into the GPU?

 

[InvalidError]

Yes, ideally, you use the permanent cable's 6+2 connector to fill one of the GPU's 8 pins plugs and use the other cable's 6+2 connector for the GPU's second PCIe power connection. This is to spread the GPU's current across as many wires to the PSU as possible to reduce wiring resistance and inductance, which should usually help with efficiency and stability.

 

[SlickyNicky]

so Basically use both Cable's and only use the 6 pin connecters with the 2 pin connecters on the side to power it? not what i suggested?

 

[InvalidError]

The two "six pins slots" on the PSU labeled "12v1" are for SATA/HDD power cables.

The cable with 8 pins one end with a 6+2 and 6 pins connector on the other is for PCIe power and the solid 8 pins end plugs into the PSU in the 12v4 connector.

 

[SlickyNicky]

im confuzzled...