I was able to get my GTX970 running on 14.10 with the help of this fine site
The easiest and cleanest way to do this is to get it from the xorg-edgers PPA
You will want to run:
sudo add-apt-repository ppa:xorg-edgers/ppa
sudo apt-get update
sudo apt-get install nvidia-346
NOTE: These packages are updated frequently and sometimes certain builds disappear so if your install command doesn't pull through you will want to go to the PPA on launchpad:
https://launchpad.net/~xorg-edgers/+archive/ubuntu/ppa
Generally just look for the newest number unless you know exactly what your looking for.
Now rejoice in the glory of your functional video card!