Hey everyone, I am ordering 2 gtx 780's to put into 2-way SLI mode and I am wondering what kind of PSU I should go with. I was planning on going with a 1000W PSU since I am going to be overclocking them and it would be nice to have the headroom. Any thoughts? Also, I am running them with an Intel i7-3770 processor at 3.4 Ghz. Do I need to worry about a CPU bottleneck with this?
One GTX 780 recommends a 600W psu. The card maxes at 250W so a sli setup would be good at 850W of a good psu (Antec, Seasonic, XFX to name a few). Make sure they have the two 8 pins and two 6 pins to power them.
GeForce GTX 780 - On your average system the card requires you to have a 550 Watt power supply unit.
GeForce GTX 780 2-way SLI - On your average system the cards require you to have a 800 Watt power supply unit as minimum.
GeForce GTX 780 3-way SLI - On your average system the cards require you to have a 1200 Watt power supply unit as minimum.
If you are going to overclock your GPU or processor, then we do recommend you purchase something with some more stamina.
I am running 2 660 ti's in sli and have been experiencing no CPU bottleneck on the 3770. Granted, I know these cards are a lot less demanding, but it still mam stakes me wonder.
660 tis aren't in the same league as a pair of 780s
I know they aren't in the same league, and I stated that I know that. But I am still skeptical if the i7-3770 will present me with any significant bottleneck issues at all. I agree as a general rule, locked cpus should be run with single gpu setups. But I am sure there are exceptions, and with it's high 3.9 ghz turbo boost, if any locked cpu could handle a multi gpu setup, it seems that the i7-3770 could do it. I guess I am just wondering if anyone has any personal experience running 700 series gpu's in sli on the i7-3770. Because at this point, a lot of the solutions I have seen seem like speculation. Does anybody know for sure?