Quick Question on buying a PC

[Admentus]

You might want to have at least 16 GB of RAM, which is quite useful for using high quality texture packs. CEMU already requires 4 GB to 6 GB RAM. With gaming quality in general being increased the last few years, more RAM will serve you beter. If you are really really into high quality textures, you should consider 32 GB (hypatia's Wind Waker or Dan Ladner's 4k Twilight Princess texture packs for example). But 16 GB is more of less today's standard in gaming. Since you want to run Paper Mario: TTYD, it might be worth mentioning that there is a wonderful texture pack available for that game.