Working with layers and opacity masks consumes RAM. When you finish a section:
Save often. Crash recovery is not guaranteed. adobe illustrator for 4gb ram
Memory leaks are inevitable with 4GB. Set a timer. Every 30 minutes: Working with layers and opacity masks consumes RAM
Ensure you have plenty of free space on your hard drive to use as virtual memory (Scratch Disk). Final Verdict 4GB RAM is sufficient only for adobe illustrator for 4gb ram
Since 4GB is the bare minimum for even a modern operating system to function, you must free up every possible megabyte for Illustrator.