Did you download the proper drivers for your new video card from nVidia's website (do not use the default drivers that Windows installs).

The CPU should be good from a quick google search, the RAM is more than enough for FFXIV. When you play, do you have your settings maxed? Does the game run well with maxed settings?

Other things that could interfere is other programs that are running when you run the benchmark. Make sure it's the only thing running at the time. (I know someone who did the benchmark while logged into the game and wondered why he got a bad rating lol).