<OK, question of the day, how many RAM boards can a MicroVAX handle? It's <living in a Sigma Rackmount chassis. You have three limits. Available power, max address space and Q/CD slots. I cant tell you home many Q/CD slots you have or how much power. The max address space for the Microvax depends on version. So you can in many cases run out of addressable space if the other two parameters are not a limit. Microvax1 4mb (Q22 limit) MicrovaxII 16mb (implementation limit) MicrovaxIII/Cvax (32 or 64mb I forget which) Allison