I've looked and can't seem to find anything. I even went to Samsung's site but the Samsung Galaxy S2 that I found there doesn't seem to be the same one. It says it's got ICS. So I'm not sure.
EDIT: I've continued to search and I've found the exact model number (or at least I believe it to be). Samsung Galaxy SGH-S959G But even Samsung's own web site doesn't list the ram!