Running 6 GPU's from PSU

[Kenna]

Hi there I am planning on running 6 GTX 1070 off a power supply. The largest capacity ones that sell locally for me are 1000w ones though (Cosair Hx1000i and Rm1000i), How would I run 6 GPU's off it. Is it even recommended, I know that 6 1070 will get very close to hitting the 1000w limit. 

Both the Rm1000i and HX1000i seem to only have 6 8 pin connections.

Would it be possible to use some kind of adaptor or other cable to run it of the peripheral & sata ports.

Or would it be better to just get 2 smaller capacity PSU (I'd rather not since it would cost me more).

 

 

 

[GDRRiley]

get 2 psu and run them togehther or order a 1500w psu from somewhere

[TheCherryKing]

Do you have a case for two power supplies? 

[Moress]

There are some 1070s that only need a single 8 pin connector to run.

[STRMfrmXMN]

2 hours ago, Kenna said:

Hi there I am planning on running 6 GTX 1070 off a power supply. The largest capacity ones that sell locally for me are 1000w ones though (Cosair Hx1000i and Rm1000i), How would I run 6 GPU's off it. Is it even recommended, I know that 6 1070 will get very close to hitting the 1000w limit. 

Both the Rm1000i and HX1000i seem to only have 6 8 pin connections.

Would it be possible to use some kind of adaptor or other cable to run it of the peripheral & sata ports.

Or would it be better to just get 2 smaller capacity PSU (I'd rather not since it would cost me more).

 

 

 

For 6 GTX 1070s I'd probably recommend something like an EVGA 1300G2. If you're going to be doing cryptocurrency mining, then perhaps a higher-efficiency unit would be even better. If you're going to be running a power hungry CPU with this system then I'd just say go balls to the wall and get a 1600 T2 from EVGA.

 

What motherboard even supports 6 1070s at once, just out of curiosity? You'd need a lot of space between the X16 slots to do that.

[8uhbbhu8]

14 minutes ago, STRMfrmXMN said:

For 6 GTX 1070s I'd probably recommend something like an EVGA 1300G2. If you're going to be doing cryptocurrency mining, then perhaps a higher-efficiency unit would be even better. If you're going to be running a power hungry CPU with this system then I'd just say go balls to the wall and get a 1600 T2 from EVGA.

 

What motherboard even supports 6 1070s at once, just out of curiosity? You'd need a lot of space between the X16 slots to do that.

This is probably for mining or some sort of computation rig therefore pcie extensions will do

[quan289]

If you are going to operating six GTX 1070 that requires dual PEG connectors and lack the native connectivity to properly power three GPUs, buy a proper PSU that have the connectors needed.

 

The EVGA Supernova 1600 G2/P2/T2 has 14 PEG connectors.

[mariushm]

You can use 2 x molex (old hdd connector) to pci-e 6+2 adapters ... each molex connector is good for around 5A , so your pci-e 6+2 connector would be able to carry at least 120w into a  video card.

 

You can also make your own adapters ... just get 2 x  [ 2 molex -> pci-e 6+2 pin ] and cut the  third 12v wire going into the pci-e connector and connect it to the 12v wire of one molex connector you cut from the second adapter.

 

You can do the same with sata connectors.. each sata connector is good for up to 4.5a on 12v.  Buy 3 sata->molex adapters  and one molex->pci-e 6+2 pin adapter  and cut them in half  and connect one sata connector to each of the 12v + ground wires from the pci-e 6+2 connector.

You now have a 3 sata - > pci-e 6+2 pin adapter , capable of carrying around 160 watts to the card.

 

example of sata to molex adapter : https://www.newegg.com/Product/Product.aspx?Item=N82E16812422644

 

You could also just go around the adapters and buy a second kit of cables for the corsair power supply and just cut the wires from the molex/sata chains of connectors and solder pci-e connectors to the wires of the connector that goes in the power supply ( the peripherals & sata sockets on the power supply have 12v, 5v and 3.3v) ... take the 12v from one socket and 12v from a second socket and wire a pci-e 8pin or 2 x pci-e 6+2 pin connectors strip to it.

 

Just use a multimeter to figure out which pins are 12v and which are ground

 

Each pin in the sockets is capable of carrying 9A of current, so two sockets will give you 18A (~ 220w) , which is more than needed for a pci-e 8pin