Would you trade 3 750TIs with a 780? Please let me know
No. Nothing draws more watts than a 780. In principle. 750TI 2GB is still the "perfect card":
i- t's small with one fan,
- it uses very little power,
- it uses Maxwell technology (which several devs continuously release improved/new code for)
- they do not need an expensive PSU
- it works great with raisers, so you can use all slots on the mobo