Safari Is Memory Hungry

[SayCheese]

I never quite realised just how memory hungry Safari actually is.
The screenshot below is from iStat Menus and shows both Safari and Firefox open but with no windows loaded (i.e. I opened both browsers then Cmd + W to close the window but leave the program running in the background).
What is Safari doing with all that memory it's hogging?

 

[Eliott69]

Most of it is cached stuff, so don't bother, since the memory would be released if necessary. "... with no windows loaded" is incorrect. Closing a window does not release memory (unless there is high memory pressure) – only closing the browser via Quit releases the memory.

Btw: I get roughly 200 MB memory usage after opening Safari (with Google as initial page). Then opening MacRumors adds another 500 MB !!!