I mean Pgware Superram ( http://www.pgware.com/products/superram/ ). Actually I never trust in apps like that but since the installation, C8 keeps working faster especially when you stop the rendering and make some refinements on your scene
I wept a little when I clicked that link. Windows Memory Manager is excellent and extremely well-tested. It does not need any help—these sorts of programs tend to fake things by purging caches. I view these companies as out to trick people who don’t understand Windows internals.
If you are having performance problems, there are a variety of tools in Windows or available for free (http://www.sysinternals.com) that can help you figure out what is going on and what you can do to correct it.
I got to use up to 10 gb of ram on 16 but do not know how and why, and during the rendering cpus are always at 100%. I’d like to know if anyone will have the same response.
High CPU use is totally expected during rendering. 10 GB / 16 GB RAM is not a problem in itself. I don’t have enough information to say for sure what is going on here. What other applications (besides Carrara) are you running? Your performance problems are likely paging.