Computer healp again

[fazersharp]

Just had a look under performance information and tools and in the graphics section it says ---

Nvidia Quadro NVS 290
Total available graphics memory  3839mb
Dedicated graphics memory        256mb
Dedicated system memory          0mb
Shared system memory              3583mb

I see that the Shared system memory 3583mb + Dedicated graphics memory 256mb = Total available graphics memory 3839mb

So is the card even though it is 256mb- using some of the computers ram and is set to using half of the installed 8gb ram -- is that how it is working