|Re: A comparison of three Hp 17bII generations|
Message #2 Posted by Don Shepherd on 8 Apr 2011, 7:35 p.m.,
in response to message #1 by Jose Gonzalez Divasson
Jose, this is a good comparison of the three 17bii units, but I have to believe that your speed figures for the 17bii+ gold are in error. I don't currently have the silver unit, but a few years ago I did some benchmarks of the solver and found virtually no difference between the 17bii+ gold and silver: both were substantially slower than the 17b or 17bii. You reported the gold unit took 78 seconds to do your benchmark; I just ran it on my gold unit and it took 167 seconds, comparable to the 17bii+ silver. My 17b ran it in 80 seconds.
You mention that later units do not have the Let and Get functions, nor do their manuals mention those. My experience is different. All versions of the 17b, including 17b, 17bii, 17bii+ gold, and 17bii+ silver, have the Let and Get functions. The manuals for the 17b and 17bii do not mention Let and Get, but the calculators have the functions. The manuals for the 17bii+ gold and 17bii+ silver do mention Let and Get, and those calculators have those functions as well.
While the plus units have much more memory, the solvers are different between the 17b/17bii and the plusses; the original solvers were faster and executed in a logical way. The new solvers are inferior.