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If you mean how much data is sent over the internet to your Google Earth client when you're navigating the earth then it varies.

The Google imagery database (used by Google Earth and Google Maps) including historical imagery and street view imagery has lots of data stored in Google's data center on many servers. Some estimates from Google in 2006 report that the "Google Earth database was 70.5 TB: 70 TB for the raw imagery and 500 GB for the index data."

Note: 1 TB = 1024 Gigabytes.

Fortunately only a small portion of the planet can be viewed at any time so you only download the data and layers for the view you're looking at. The first time to run Google Earth it will download 50-100Mb for the initial layers and imagery, which is saved in the cache.

Google Earth, like your web browser, creates a disk and memory cache for downloaded content. The disk cache starts with default of 400MB up to 2000MB (2GB) depending on how much free space is available, but this value can be decreased. The memory cache starts with a default 256MB up to 500MB depending on amount of physical memory installed on the system.

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12y ago

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