What cables for a graphics card

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That is interesting. League of legends doesn't require a whole lot so you should be able to easily max out the settings and get 60+fps. Either way, without a doubt, you should use the PCIe power connecters. I think the 770 may have two power connectors. You'll need to plug in both of them, I'm thinking its an 8 pin and a 6 pin, can't remember for sure, but the power supply will have them labeled. I'm POSITIVE that's what you should use. The issue lies elsewhere....could possibly be a bad PSU, but nonetheless to answer your question--use the PCIe power connectors.
PCI-E 6 pin connector that card I believe has 2. From Power supply which should have them marked as such (PCI-E) to your Graphics Card, good luck... Some cables may have 6pin +2pin if that's all you have they can be used.
 
But will that be for the performance because ive been seeing how people talked about how a card like that would need at least 40 amps or something, because i'm running not that good of fps and everything is working and up to date, just wondering why i'm not getting like at least 100 fps in league of legends.

Specs:
CPU: AMD FX 8350
Memory: 16gb DDR3 1866Mhz
PSU: 750W Thermaltake TP
 
That is interesting. League of legends doesn't require a whole lot so you should be able to easily max out the settings and get 60+fps. Either way, without a doubt, you should use the PCIe power connecters. I think the 770 may have two power connectors. You'll need to plug in both of them, I'm thinking its an 8 pin and a 6 pin, can't remember for sure, but the power supply will have them labeled. I'm POSITIVE that's what you should use. The issue lies elsewhere....could possibly be a bad PSU, but nonetheless to answer your question--use the PCIe power connectors.
 
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