To understand what "RR.V.3.0.45.64Bit.Win.rar" represents, we must break it down into its constituent parts. Software naming conventions usually follow a logic that reveals the developer, version, and compatibility.

What is the of the software (e.g., Road Runner, Real Render)?

However, without more specific information about what you're looking for (e.g., a user manual, technical specifications, installation guide, etc.), it's challenging to provide the precise content you're seeking.