That is a great card, it would suit you fine, but it's probably a good idea to get the best one that your budget will allow. 2GB of VRAM is optimal for 1920x1080 resolution, 1GB below that. I'd still recommend you get the 2GB version so you can upgrade your monitor in the future if you don't have one that can do 1080p yet.
You never mentioned what kind of a PSU you are using. That card has about 500W recommendation I believe, but quality 450W should be ok with your CPU.