Aswith standard RAM, you can all but ignore graphics cards with 4GB of VRAM unless you plan on playing older games. 8GB of VRAM is good, but 12GB is even better.
The4GB RAM performs excellently only on extremely low-budget devices and tablets; it is not suitable for gaming. 8GB RAM is ideal for entry-level notebooks without heavy gaming or RAM-heavy activities. The modern games are heavy on RAM and consume up to 6.6GB of RAM, minimum. So, with 8GB, you can only get by with the basic games.
. Simple answer: Yes, you can have more than 4gb on your sustem. Longer answer: You did a very good thing upgrading from 2 to 4gb. You probably had only 1.5gb or so available to use, now you have 3.5gb. A 32 bits can address up to 4gb so a 32 bit os can not use more than 4gb of ram. Past that, a 32 bit os must reserve some ram for