Optimal power connection

[ChrisZH]

Can I use one slot from a modular power supply that has dual 6+2 pin connectors to power my rx vega64? Or should I use two separate cables?

[W-L]

26 minutes ago, ChrisZH said:

Can I use one slot from a modular power supply that has dual 6+2 pin connectors to power my rx vega64? Or should I use two separate cables?

Theortically it should be fine but since it is a pretty power hungry card I would sugges to seperate it if you have the extra connections to do so. 

[nick name]

Don't different "slots" have different voltages? Does your PSU have that slot labeled? If it's the wrong voltage it may be a bad idea.

[ChrisZH]

8 hours ago, W-L said:

Theortically it should be fine but since it is a pretty power hungry card I would sugges to seperate it if you have the extra connections to do so. 

I heard that using separate cables helps with the power going to the card. This true?

[W-L]

30 minutes ago, ChrisZH said:

I heard that using separate cables helps with the power going to the card. This true?

It helps mainly for the amount of power or amps your pulling through the PCI-E cables since your splitting it among more conductors. While it wouldn’t have a big effect it can help a little.

[ChrisZH]

1 hour ago, W-L said:

It helps mainly for the amount of power or amps your pulling through the PCI-E cables since your splitting it among more conductors. While it wouldn’t have a big effect it can help a little.

As it is right now, I have some coil whine but through wattman overlay it seems my gpu is only pulling maybe 110watts max. Is this kind of low? Is this because of the single connection I have it on?

[ChrisZH]

Ok I’ve just tried with 2 seperate pcie cables for the rx Vega 64... made the whine worse. I’m just gonna return and buy gtx 1080 lmao

[W-L]

On 7/13/2018 at 10:15 AM, ChrisZH said:

As it is right now, I have some coil whine but through wattman overlay it seems my gpu is only pulling maybe 110watts max. Is this kind of low? Is this because of the single connection I have it on?

On 7/13/2018 at 1:19 PM, ChrisZH said:

Ok I’ve just tried with 2 seperate pcie cables for the rx Vega 64... made the whine worse. I’m just gonna return and buy gtx 1080 lmao

Is the GPU under load that does look pretty low but a single connection shouldn't cause that? As for coil whine is very much luck of the draw sometimes you can burn in the card by using it or running some stress test for a while to see if it lessen a bit overtime. 

[Leonius]

On 13.7.2018 at 7:19 PM, ChrisZH said:

Ok I’ve just tried with 2 seperate pcie cables for the rx Vega 64... made the whine worse. I’m just gonna return and buy gtx 1080 lmao

Coil wine hat very little implication on how good power delivery is. One wire should be fine two connectors is a bit better but it wont damage your components and likely you will see no performance difference.