Here are my specs:
Samsung 840 Pro 256GB SSD
RME Fireface 400
CPU Intel Core i7-2600K Quad-Core Processor 3.4 Ghz 8 MB Cache LGA 110)
Video - I just upgraded to the EVGA GeForce GTX760 SuperClocked w/EVGA ACX Cooler 2GB GDDR5 256bit
PSU - Corsair Enthusiast Series TX 850 Watt ATX/EPS Modular 80 PLUS Bronze (TX850M)
Windows 7 Professional 64 Bit installed.
Corsair Carbide Series Black 300R Mid-Tower Computer Case
Plextor 716A CD/DVD-Burner
Motherboard Gigabyte Intel GA-Z68X-UD3H-B3 with UEFI BIOS
Corsair Vengeance 16GB (2x8GB) DDR3 1600 MHz (PC3 1280)

Here is a link to the PSU - http://www.corsair.com/enthusiast-series-modular-tx850m-80-plus-bronze-certified-850-watt-high-performance-modular-power-supply.html

I am wanting to know if the PSU if everything I currently have is powerful enough for a second GTX760. I know it has to be exactly the same. I currently am playing a lot more video games than audio work coming in.

Thanks!

 

As far as I know, that PSU should be capable of doing it. *yes*

 

look at specs for each item listed for your power requirements, add them together will give you the power supply required (wattage) then add the power required for the extra graphics card.
As a guide if it is less than 70% of your PSU output then you should be good to go. The wattage given for your PSU will be the maximum rated load, aiming for 70% (approx) will leave enough power to prevent any problems with supply under load.

 

Look here on the bottom​

Total Power Draw : 170 Watts​

Your Video Card​

Make sure you click on Details tab​