info-vax@ucbvax.ARPA (11/07/84)
From: Art Berggreen <ART@ACC> > Can anyone help fill this in please? Is 782 same as 780? What about > 785? 8600? uVAX II ? etc. Thanks in advance. (Educated "guesses" from > test sites of new machines would be welcome.) The 782 is a closely coupled machine consisting of two 780 processors tied to a multiport memory. The second CPU only runs in user state to execute processes. The primary processor runs most of VMS and other user processes. The 785 is essentially a sped up 780 with a larger cache. In most respects, other than speed, it is identical to a 780 (as someone said "...bug for bug, it looks like a 780..."). The newly announced 8600 is the long awaited "VENUS" VAX. This is a new (ECL hardware I believe) machine reputed to by 4 times a 780. The uVAX's are VAX-on-a-chip type machines, which currently use the Q-BUS. Current uVAX's have a reduced instruction set, with compatibility mode gone and other instructions emulated in software. The uVAX-I is two board, chip-set processor with about 730 performance. The uVAX-II reduces the processor to a single chip and reputedly will have 780 class performance. <Art@ACC.ARPA> ------