I hope you are aware that the /90A is ridiculously faster than a 2000 or a 3100/m38... Not to mention that you likely have way more memory in the machine than was even possible on the old ones you mention.
Yes, and I even had 12 MB in my 2000, was not to bad with Ultrix, shame Ultrix does not work on my /90A with 128 MB ram :(
/Mattias