Just for the info, cos it pops up from time to time
Quadra 605: http://www.danamania.com/tmp/605_ram.jpg - 128MB + 4MB
Quadra 630: http://www.danamania.com/tmp/q630.jpg - 128MB + 16MB + 4MB
'tis all working pretty well. The latter has a 630DOS logic board in, giving an extra SIMM slot.
http://www.danamania.com/tmp/128-72.jpg is one of the pair of HP branded 128MB SIMMs.