Steam Game Download shows different values for "total GB"

[Gorn]

Hey,

I Hope this is the correct place for the question.

When downloading Steam Games and looking at the Download site in the Steam library (sorry dont know how to Name that) there is at the top right the place that says "Downloading...current, Peak, total and Disk usage). Under that is the Game which says "Downloading...xx remaining, xx / xx GB, xx / xx GB (Network and Disk usage).

My question is that If i Download a Steam Game it says two different values for the Downloaded GB: at the total value there is 31,5 GB and the Game says 29,4 GB.

That is the First Game i Download today so i dont know why there is a 2,1 GB difference when the Game only used 29,4 GB for Download.

Could that be the pre shaders for Linux? Dont habe that enabled but i did it only recognized the Last days but i never looked on the two values at the same time before i recognized that.

Anyone has similar Problems or know the answer why that difference Happens?

Thanks in advance for any Help.

[Sergeant Tuff-Stuff]

There's two:One for the current amount that's been installed on the disk and the amount that has been downloaded in general.The latter is usually bigger than the former.

[MancSoulja]

Steam downloads are compressed, the first number is the size of the actual download, the 2nd number, the larger one is the size on the disk once the game is unpacked.

[Satoru]

https://steamcommunity.com/sharedfiles/filedetails/?id=2780434332

The numbers you see are 2 different ones

Th enumbers on the left are the DOWNLOAD size. How much of the patch you have left to download

The numbers on the right are the LOCAL size. How much LOCAL FILES need patching and how much is left.

Because Steam uses delta patches, it will download a smaller delta patch that is a database of file changes. Once it downloads this file, it then calculates what changes need to be made in combination with the original file, to make the new file. As such you can download a file that is a certain size and then has to patch a bunch of files muich much larger

As an extreme example, Payday2 due to its game engine structure, basically requires every patch to touch EVERY FILE IN THE GAME. Meaning that a 1GB download patch file, will patch almost 100GB of local files. Again how this ends up depends highly on the game's file structure. Some games split out everything into lots of small files. Others combine certain things into singular larger files. On the other super extreme, UE4 used to combine all game assets into a single file (this was to improve disk performance on older slower spinning drives)