Apple IIGS RAM Upgrade
There are several modern RAM options available. There are two makers of RAM upgrades that I know of: gglabs and ByteBoosters You can usually find the 4MB modules easily, but there are 8MB modules available from time to time.
If you have an original RAM module installed, carefully remove the module. Although it is only 1MB, it can still be useful for systems where there is no RAM upgrade.BEFORE touching the circuitboards be sure to ground yourself. These systems are very supseptable to electrostatic shock
Carefully plug in the new RAM expansion card
When you power up the system again you will have the 4MB of RAM available to you plus the onboard 384KB of RAM. GS/OS will load like a beast!