andywillers :
Bafioo :
bicycle_repair_man :
If your PSU doesn't have sufficient PCIe connectors, then you're out of luck I'm afraid.
That's actually not right, there are adapters.
Like this one:
http://www.systemagnostic.com/wp-uploads/2013/01/molex_pci-e.jpg
They usually send you this togheter with the GPU, inside the box, i mean.
And in case you don't have one, there is an amazon link:
http://www.amazon.com/HDE-PCI-Express-Pin-Molex/dp/B0041P73LE/ref=sr_1_2?ie=UTF8&qid=1423830481&sr=8-2&keywords=2x+Molex+4+Pin+%3E+PCIe+6+Pin
Great! So it is doable - my PSU definitely is rated high enough to handle the two cards. Thanks for the link.
Should I run into any troubles?
Cheers!
Any at all! Those cables are made for that
and yes your power supply is enough for a 780 sli, even 800W are enough, as long as they are good quality ones.
Tho even if your 1100W was low quality it has to warrantly an ammount of Wattage, check the side of the PSU and read how much wattage does it warrant to you.
Keep in mind two 780 Ti pushed to the maximum will be consuming 617W.
So considering the other components even 750W are enough, not if you have and AMD CPU FX 9000+
But i still think your PSU warrant atleast 950W if not more. Check the side of your PSU and you'll be fine