ASUS eee 1011px. New 4 GB RAM?

[Enzo49]

I bought Asus eee 1011px in 2011 with 1 GB Ram and Win XP for office use.
Then I installed 2 GB RAM and Xubuntu OS.
The system monitor shows often, during applications, CPU high value which slows the performance, while the Memory is not so high.
Questions:
- Can I increase the RAM to 4 GB for better performance?
- 4 Gb RAM is easily available from the market?
- 4 GB RAM is suitable for all hardware (motherboard) installed and Linux OS?
- Can I consider, if feasible and performing, to install a SSD drive?
Thanks in advance for any help.
Enzo.

 

[digitaldoc]

You can definitely install an SSD. Most of these netbooks are maxed out at 2 GB and wont handle 4 GB.