RenderTexture memory Usage

Hi! I have a scene which has some explosion particles. I'm using the memory profiler to check the memory usage. "Texture2D" Appears to be 20MB, but "RenderTexture" Shows as 250MB. Is this a normal value? I only have a camera and the explosion particles, I didn't actually set up a render texture so I don't know why it's showing up.

 

Does the render texture use Antialiasing? This will increase the texture size massively.
Are you measuring inside the editor or from a build?
You may be dealing with stuff from the editor showing up.

 

I'm not actually using a rendertexture. I only have a camera and the particles in the scene, no lights or anything else. I'm guessing it shows up as rendertexture because there's a camera?

 

The editor uses rendertextures to draw the scene and dependent on the rendering Pipeline unity does use render textures internally for rendering.
To make sure you can build a debug build and connect the profiler to it.