I think OP is mistaken, 512 MB was max in a sparcstation 20. Unless they were working at LLNL or Brookhaven Labs on something very special affording 2GB of ram in a 1997 desktop workstation would have been nearly impossible to justify financially. And probably wouldn't have been a sun, it would have been a $35,000 SGI. Such as a Onyx or Onyx2, or Challenge. Something r4400 based.