From: utzoo!decvax!ucbvax!info-vax Newsgroups: fa.info-vax Title: Main memory Article-I.D.: ucbvax.7986 Posted: Mon Jul 12 09:17:54 1982 Received: Tue Jul 13 06:20:01 1982 >From DP@MIT-ML Mon Jul 12 09:12:37 1982 the main advantage of running 8m is that you get two memory controllers. this is good for about 15-17% cpu speed increase. SAO, and northeastern found that there was little benifit going beyond 6m, but that is job size dependent. if you are realy curious, there is this led on board 23 of the cpu (all by itself, unfortunately under the orange stripe on the cover), called the "Stall" light. this lights up every time the cpu has to wait for the SBI. enjoy, Jeff