To continue:
Amiga 600 can be upgraded to max 2mb of chip ram (as with amigadaves A603)
Then you can also add fast ram either thru the pcmica slot on the left side or with accellerator added ram.
All amigas do better with 2mb of chip ram and some (prefer 4mb) of fast ram.
The 600 with a hard drive (or cf card) and chip and fast mem will perform quite well.