Need help w/ what power cables to use for new GPU!!

R3WiND S3LeK7aH

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This is the power supply I have: http://www.thermaltakeusa.com/products-model.aspx?id=C_00001994
Presently I'm running an EVGA GTX 580 using the psu's native (non modular) PCI-E 6+2pin & PCI-E 6pin connectors. I unfortunately only have 1 additional modular 6pin PCI-E cable for the psu.
I'm ordering the ASUS Strix GTX 980 ti OC Version here: http://www.newegg.com/Product/Product.aspx?Item=N82E16814121972
which says it only includes 1 dual 6 pin to 8 pin connector and the graphics card requires 2 8 pin connections.

My question is if I am good to go connecting my psu's native 8 pin to one connector, and then using the dual 6 pin to 8 pin adapter included with the 980ti, connected to my psu's native (not modular) 6 pin cable & the modular 6 pin pci-e cable I have? hopefully that makes sense. Or would I benefit for any reason by ordering a modular 8 pin pci-e cable for my psu along with the graphics card and just not use their included cable?
My concern (which could be unwarranted, idk) is whether using the gpu's included dual 6 pin to 8 pin adapter with both modular and non modular 6 pin connectors would be bad. Thanks for the help, if getting a modular 8pin pci-e cable is my best option and you could include a link to a compatible cable on new egg that would be greatly appreciated since i'm ordering the gpu from there already, hopefully tonight if I can get this resolved.
 
Your Thermaltake TR2 RX750 comes with two 8-pin and two 6-pin PCIe connectors so you have more than what you need for the new GPU unless you lost or damaged something. I recommend upgrading to a higher quality power supply since the TR2 is not very good at all.
 

R3WiND S3LeK7aH

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Thanks for the reply. The PSU has one native 8 pin connector, and the second was modular which I no longer have. So I need a replacement modular 8 pin pcie cable, preferably from newegg.

Perhaps you could tell me, I do have available one modular 6 pin pcie cable and one native 6 pin pcie cable. Would these work together for the second 8 pin connection with the gpu's included dual 6 pin to 8 pin adapter?
 

R3WiND S3LeK7aH

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Thanks for the reply :) The PSU is getting upgraded in a few months along with the cpu and mobo. I'm ordering the graphics card now because its atm bundled with a $60 game I want. I just wanted to make sure I could atleast in the mean time run the gpu and make sure it functions properly before the 30 day return window is up, which may be the case if I wait to get the new psu to try the gpu.
 

R3WiND S3LeK7aH

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From what I can tell, the only power cable the GPU comes with is a dual 6 pin to 8 pin connector. I believe this would work fine, each of my 6 pins providing 75w to equal the 150w needed by the 2nd 8 pin connector on the gpu. I just am unfamiliar with psu components and didn't know if using 1 native and one modular 6 pin for the adapter would be bad ie varying current or something. I am upgrading the power supply soon, I just don't want to wait until then to test the new gpu because i'll be outside my 30 day return window if I do. And I'd like to order the gpu now while its bundled with a $60 game I would otherwise be buying anyway.
 
You can actually run a 8 pin from a single 6 pin (most adapters are single 6 pin to 8 pin)
The extra 2 wires are sense & ground so there's no reason a 6 pin can't carry 150w - however good on Asus for putting a twin adapter in because its quite simply 'the correct thing to do' & negates worries of split 12v rails & thinner guage PSU cables.
 

R3WiND S3LeK7aH

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I'm not really familiar with the comment you made about split rails, idk much about power supplies but would that be something I'd have to worry about using both modular and native 6 pin cables for the dual 6 to 8 pin adapter?
 

R3WiND S3LeK7aH

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Awesome man, thanks for all the help. Posted my question on PCPartPicker, Eggxpert, and a couple other forums and you've been the only one to provide sufficient helpful info :)