werner@aecom.yu.edu (Craig Werner) (06/22/89)
At New York's PC Expo, IBM had up and running a PS/2 model70A21 with
the '386 processor card replaced with a '486. (And apparently this card
is specific for the A21, since when it had to be recently redesigned in a
major way, they stuck in this capability). They had two model 70s side
by side runnning AIX, with huge monitors. The 386 model had a command
line window, a Dhrystone, and an Whetstone window, and another application
window. The '486 version had the same, plus an extra window that I told
the rep that he didn't have to close. Dots were being displayed every
so many thousand iterations on the benchmarks, and I watched it awhile,
and counted roughly three dots on the '486 for every dot on the '386, even
though they had the same clock speed. That was true for both benchmarks,
although I would have assumed the floating point would been even more
dramatic since the "487"-equivalent was built on chip. I didn't ask
whether the other machine had a '387, but in retrospect, it must have...
--
Craig Werner (future MD/PhD, 4.5 years down, 2.5 to go)
werner@aecom.YU.EDU -- Albert Einstein College of Medicine
(1935-14E Eastchester Rd., Bronx NY 10461, 212-931-2517)
Everything's different. Nothing's changed. Well, only maybe slightly rearranged.