shadow32 :
I have a GA 990FXA UD3, it has 3 slots.
I have a 630W PSU. Heat in the case shouldn't be a problem, I have CPU on H100i pointing out top of case. I have IR heatgun next to it and HWinfo monitoring VRM's, CPU, and GPU whenever I'm gaming.
How do I go about this? Do I just plug the card in and that's it? Do I need the driver for it if I'm mining with it? Can I mine and game at the same time since mining doesn't use the CPU at all? (barely, saw a rig with a single core P.O.S. with 4x 280x's running) I have an 8350.
Sorry, I meant litecoins(dogecoins in my case) not bitcoins
Yes your MB has : 2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2)
So you can attach both cards (GTX & AMD) on the respective slots to get the best out of it. Both cards will run on their full bandwidth no worries.
Insert the cards and install the drivers for them, and you are ready to go. But you cant game with both the cards at the same time. You have to either use the GTX one or the AMD one for gaming.
You need XP or WIN 7 as OS just keep that in mind.
GTX 760 will use 170W on max load, and HD 7850 will use 130W on max load, so you will be fine with the power consumption.
But I wonder why you want to use both cards, I don't see any benefit. And I don't know anything about bitcoin, litecoin whatever you say.
And yes you can game with 760 and mine with 7850, but not at the same time. Good luck.
P.S. Your MB has 4 x PCI-E slots. 2 runs @ 16x another 2 runs @ 4x speed.
2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2) (Note 3)
2 x PCI Express x16 slots, running at x4 (PCIEX4_1, PCIEX4_2)