Gigabyte GeForce GTX 780 Ghz Edition cable problems (Do I have the right ones?)
3 replies, posted
[B]I'm going to start this off by saying that this is probably going to be a poorly written OP by someone who only vaguely knows what they're doing (In my defense, I think the cables involved in building a computer have changed a bit since the last time I did this).[/B]
I'm trying to install a Gigabyte GeForce GTX 780 Ghz Edition card in my new computer but I'm note sure I've got the right cables for it.
The card came with two of these (except the black end on mine looks like an 8-pin connector with only 6 pins in it):
[IMG]http://t3.gstatic.com/images?q=tbn:ANd9GcRN7I2D1FVAWvxnPov-eBQFx0LKqtTDr_UT7BYSXGCc_fta0gYSPA[/IMG]
And my PSU is an EVGA 750G which has a plug-panel(?) like this:
[IMG]http://www.evga.com/articles/00709/images/hero/750G-650G_Modular.png[/IMG]
And came with these cables (thumbed for size):
[img_thumb]http://www.evga.com/products/images/gallery/120-PG-0750-GR_XL_3.jpg[/img_thumb]
How am I supposed to plug this card in? (If I'm even able to with these cables)
[editline]6th May 2014[/editline]
Forgot to mention just in case I needed to, the video card requires to 8-pin connectors but the only information I've found via google about installing video cards talks about cards with one 8-pin and one 6-pin slot.
Use the red ones. 6pin + 2 pin. They should only be able to go in one way.
The cable that came sith the card is only usefull if your PSU is shitty.
The red ones are 6+2 pin and 6 pin. Don't I need two 8 pin or two 6+2 pin ends? Or do I just use two separate cables?
It's never really a great idea to use Molex to PCIe power adapters, and it's definitely not recommended in your case if at all possible.
Two Molex to 6 pin PCIe power adapters can supply 150W (75W each) under ideal conditions, while the GTX 780 normally pulls 250W under max nominal load. Since your card is significantly overclocked, the power draw is going to be much higher. Your card would be drawing 66% more power than the adapter could deliver under normal conditions, and much more while overclocked.
It would be a very real fire hazard and failure of the power wires could cause spectacular failure and extensive component damage.
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