CPU still needed, still get a hard drive?

Hello everyone,

I bought a computer and I was excited to download sims 4 because my other computer seemed to never have any available storage to play despite having absolutely nothing on it. I can easily download sims on this computer, but it gives me a "you are running the 64 bit" and telling me to change it to 32 bit or my game will be unstable. I also found out that the 32 bit was removed. I looked at the requirements for the sims on their page and clicked the link to scan my computer to see if I met the requirements, and I failed for CPU.

3.3 GHz Intel Core i3-3220 (2 cores, 4 threads), AMD Ryzen 3 1200 3.1 GHz (4 cores) or better

You have: AMD Athlon Silver 7120U with Radeon Graphic

Should I still buy an external hard drive for CC and Mods (THAT ARE ALLOWED BY EA), or would it not work still because of my CPU?