Is my power supply good enough for SLI?

Fralinboy

Honorable
Feb 17, 2013
12
0
10,510
Hello,

I built a computer about two years ago. Recently, I have been thinking about upgrading my GPU. However, I have also thought about purchasing a second of the same GPU I have and using SLI. However, I am worried I do not have the power to support that. So would my PSU be capable of supporting it, or would it be better just to buy a better GPU?

Current Specs:
Intel i7 3930k
GeForce GTX 680
16 GB RAM
ASUS p9x79 pro
Thermaltake Smart M 850W Power Supply
Also I will be trying to play games at 2560x1600 if that matters

Thanks!!