Now that we know that IBM does have a 4391 line up its sleeve (CI No 1,049), what should we look for? Gossip is of an Enterprise Systems Architecture machine with Expanded Storage (well of course), implemented in CMOS similar to, if faster than, that used in the 9370, priced at about $80,000 per MIPS against $110,000 per MIPS for the 4381, and offered in configurations of up to six processors to deliver 40 MIPS.