If you're looking to download "X64c.rpf" for legitimate purposes, follow these general guidelines:
Steam has a built-in file verification that compares every .rpf file against Valve's master record. X64c.rpf Download
In the root folder of GTA V (typically C:\Program Files\Rockstar Games\Grand Theft Auto V), you will find numerous .rpf files. RPF stands for Rockstar Package Format. These are proprietary archive files similar to .zip or .rar folders. They contain all the game assets—textures, audio, models, scripts, and configuration data. If you're looking to download "X64c
Specifically, X64c.rpf is part of the core game data. The naming convention breaks down as follows: This file typically holds crucial environment data, map
This file typically holds crucial environment data, map assets, and character models. If this file is missing, truncated (incomplete), or modified incorrectly by a mod, the game will enter an infinite loading screen, crash to desktop (CTD), or display texture loss (invisible roads/characters).