Performance - Two monitors connected to GPU, or one to GPU and one to MOBO?

[SpartanCSH]

Hey all,

Yesterday I completed a major overhaul of my desktop gaming PC: an upgrade of the CPU, MOBO, and RAM.

The previous setup had my main monitor (for gaming) connected to the GPU, and the secondary monitor (for web-browsing, watching videos) was connected to the MOBO and using the on-board GPU.

The new configuration does not appear to like this, and I can only get both monitors to work if they are connected to the GPU.

My question: Is there a difference in performance between the two setups? While connecting both monitors to the GPU is quick and simple, I'd rather not burden the card with extra processing needs.

Old Setup:
ASUS Maximus IV Gene-Z MOBO
i5-2500k CPU
16GB DDR3 RAM (4GBx4 sticks)
EVGA GTX 670 FTW GPU

New Setup:
Gigabyte GA-Z270X-UD3 MOBO
i7 7700k CPU
16GB DDR4 Viper RAM (8GBx2 Sticks)
EVGA GTX 670 FTW GPU (obviously this is in need of an upgrade as well)

Thanks,
-Spartan

 

[Zmanrocks]

Both in the gpu are the best option always unless not possible.