PCI Express Power Connectors and changing graphics card, I'm confused

[firefalcon124]

Hello,

I have a question about upgrading my current Amd Radeon HD 6850X2 to a GTX 770.

I've read on the spec page for the GTX 770 that it requires an 8+6 pin PCI Express Power Connector, but I'm not sure exactly what that means.

From what I can see inside my rig, my current Card is connected to my PSU via a single 6 pin PCI Express Power Connector, which itself seems to be converted from two 8 pin PCI Express Power Connectors (I'm not sure though, it's kinda hard to tell).

Given I need 8 pin and 6 pin PCIe Power Connectors for a GTX 770, what do I need to do/get to install it ? Will an adaptor come with the graphics card ? Or do I need to change my PSU ?

Cheers,
Owen.

Edit: As far as power goes, I largely suspect I'm fine, as a GTX 770 uses ~30W less than my current HD 6850X2.

 

[Eggz]

Either on of these will work for an 8-pin

Either one of these will work for a 6-pin

 

[firefalcon124]

Either on of these will work for an 8-pin

Either one of these will work for a 6-pin

So I will need to change my PSU ? I only have two 8 pin cables, and nothing to fit a 6 pin connector...

 

[Eggz]

No, just spend $4 on this extender cable (8-pin to 6+2 pin):

http://www.newegg.com/Product/Product.aspx?Item=N82E16812162050&cm_re=pcie_power_cable-_-12-162-050-_-Product

Or (if you have a modular power supply) replace one of your current 8-pins with a 6+2 pin like this one for $11:

http://www.newegg.com/Product/Product.aspx?Item=N82E16812706033&cm_re=pcie_6%2b2_pin_female_to_female-_-12-706-033-_-Product

 

[firefalcon124]

No, just spend $4 on this extender cable (8-pin to 6+2 pin):

http://www.newegg.com/Product/Product.aspx?Item=N82E16812162050&cm_re=pcie_power_cable-_-12-162-050-_-Product

Or (if you have a modular power supply) replace one of your current 8-pins with a 6+2 pin like this one for $11:

http://www.newegg.com/Product/Product.aspx?Item=N82E16812706033&cm_re=pcie_6%2b2_pin_female_to_female-_-12-706-033-_-Product

thanks man