Toribash
RAM does not store files. That's a hard drive.

GPUs do not store files, or really do anything at all.

The GTX 460 alone will suffice to make raytracing run perfectly, albeit Toribash uses some ridiculous file operations that if you want to avoid ever having your FPS drop below 55 you need a solid state drive, I do believe.

Since you're already on an Nvidia GPU, changing to another Nvidia GPU will have almost no effect on anything besides your frame rates, albeit you will probably want to check if you can update your drivers afterwards.
Squad Squad Squad lead?
The standardization of Toribash Squad roles may have gone too far!