Particle system hardware usage

I m trying to make a grass field using
the particle system but as I increase the instance number blender freezes or crashes my cpu is only running at around 60% so I’m wondering what system resources the particle system mainly uses and iff a ram upgrade will help solve my problem?

Adding more RAM will help if the problem is due to low RAM. How much RAM do you have? You make sure this is due to a RAM problem by monitoring RAM usage with an external RAM monitor app.
In the meantime, if you are using Cycles, you would google how to use Camera Culling and Distance Culling in Blender to try and reduce RAM usage a bit.

im only running 8 gb at the moment but can source 16 gb for a good price. yes i didnt think about camera culling that will help thank you so much for your help