The short answer is if the game plays OK then probably no.
The longer answer is it rather depends on your graphics card and which other things are running when you play the game.
Depending on all of these things you may reach a different conclusion. The patch is intended to deal more effectively with memory allocation so that it is fully optimised.
If it was me I would install the patch, it can only help if one day the things it does are needed by your machine.