- Jan 22, 2008
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- 19,010
I have a XFX 850W Fully Modular Black Edition power supply. It is made by Seasonic and has excellent reviews. I recently built my first custom water loop and started looking at custom power supply cables, like cable mod. I then realized that my current pcie cables are dual 6+2 pin on the video card side and a single 8 pin on the power supply side. I noticed this when I first got the power supply but I never thought about it after installing it. I know the power supply can handle it because it is a single 12v rail power supply. What I don't know is if the wires can handle the load of a heavily overclocked 980ti. I have been using it that way for some time with no issues but I started doing some research and I came across this: https://seasonic.com/faq/
According to that link I should not be connecting a high power video card, like the 980ti, using the dual 6+2 pin pcie cable that is included with the power supply. Instead I should be using 2 single 8 pin cables for each video card. Of course those cables are not included with the power supply. All of the custom cable manufacturers seem to include dual 6+2 pin pcie cables in their kits as well.
I don't know what the maximum wattage is that type of cable can handle before it becomes dangerous. I wouldn't have thought this would be an issue since it has been working fine in my system this way for a while. I haven't gamed for hours on end with the cards overclocked though and now that I am water cooled I plan on pushing them hard.
So can a cable with dual 6+2 pin pcie on the video card side and a single 8 pin on the power supply side handle the wattage of a heavily overclocked 980ti? I know the power supply can handle it. I am just concerned about the actual cable. Especially if I end up spending money on custom cables. I am leaning towards getting 4 single 8 pin cables just to be safe but Custom Cables doesn't make a kit like that and it is much more expensive to order the cables a la carte.
According to that link I should not be connecting a high power video card, like the 980ti, using the dual 6+2 pin pcie cable that is included with the power supply. Instead I should be using 2 single 8 pin cables for each video card. Of course those cables are not included with the power supply. All of the custom cable manufacturers seem to include dual 6+2 pin pcie cables in their kits as well.
I don't know what the maximum wattage is that type of cable can handle before it becomes dangerous. I wouldn't have thought this would be an issue since it has been working fine in my system this way for a while. I haven't gamed for hours on end with the cards overclocked though and now that I am water cooled I plan on pushing them hard.
So can a cable with dual 6+2 pin pcie on the video card side and a single 8 pin on the power supply side handle the wattage of a heavily overclocked 980ti? I know the power supply can handle it. I am just concerned about the actual cable. Especially if I end up spending money on custom cables. I am leaning towards getting 4 single 8 pin cables just to be safe but Custom Cables doesn't make a kit like that and it is much more expensive to order the cables a la carte.
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