My system has 3.8 GB of ram. My system allows 8 GB of ram. If I insert another memory chip of 4 GB, do I have to make any other changes in OS setting etc?
No, you do not have to make any system changes.
The new RAM size will be detected automatically.
If possible, select a model from the same vendor.
Otherwise, get one with the same specifications.
Some of the important RAM specifications are:
- DIMM (desktop) or SODIMM (notebook) module
- DDR, DDR2, DDR3, or DDR4 RAM
- RAM capacity (in GB)
- RAM speed (in MHz)
You might mix modules with different speeds or timings,
but then the slowest settings will be used for all modules.
- pin count
Additional information about the usage of swap:
(credits to @Paddy Landau for this contribution)
Swap may be used for high-memory-intensive tasks such as extensive editing of large videos.
Swap is also used for hibernation - if you want to hibernate, swap must have at least the same
size as RAM. If you never intend to hibernate, 4GB swap space will be sufficient for normal use.