Well, you can understand everything by reading the title of this pack. Simply HD Resource Pack is more likely a simplystic texture pack but also a HD pack.
64x Resource Packs
Fallout Resource Pack is a surprisingly amazing texture pack that will create an atmosphere of post apocalypse and will impose universal oppression. You will Enjoy it!
Ravand’s Realistic Resource Pack is a great realism-based minecraft texture pack in almost all resolutions, starting from 16x and ending with 256x!