How fast is the HP Prime?

03102014, 07:34 PM
(This post was last modified: 03102014 07:44 PM by jebem.)
Post: #8




RE: How fast is the HP Prime?
(03102014 03:07 PM)HP67 Wrote:(03092014 07:17 PM)jebem Wrote: When we look to the venerable and powerful HP50G, we understand the costs of Saturn emulation... more than 60 seconds to compute the same integral! 1) Hi, HP67! I understand your point. Of course HP Prime is faster! That is exactly my point: HP has done an excellent choice of hardware and software components for the Prime, and the benchmark just prove it! Otherwise, the benchmark results would be poorer for the HPPrime, even running at 400MHz. And please let's not generalize and jump to conclusions: this benchmark is only valid for the above equation, nothing else. 2) Concerning your observation on the costs of emulation: I agree with you, of course. We cannot compare apples to apples here, as we do not have a native 75MHz Saturn processor. However, let me do some basic analysis here: I have run the benchmarks myself on my HP50G and HPPrime, after seeing the video:  Let us say the HP Prime takes 0.1 Sec to come out with the result (and I can guarantee it is taking less than that: the answer is instantaneous. Try it yourself to check it).  The HP50G takes about 65 sec.  Calculation speed ratio of: 65/0.1 = 650 times faster for the Prime.  Raw clock speed ratio: 400 MHz / 75 MHz = 5.3 faster clock in the Prime. So, for a 5 times faster clock, the Prime is 650 times faster. Analysis: The poor HP50G performance root cause is not the lower clock speed. Make your choice(s) for the root causes:  Saturn emulation.  Inefficient Saturn cpu architecture;  Poor choice the host ARM processor for the job;  Inefficient HP49 series algorithms when compared with the ones implemented in the Prime. Jose Mesquita RadioMuseum.org member 

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Messages In This Thread 
How fast is the HP Prime?  jebem  03092014, 07:17 PM
RE: How fast is the HP Prime?  ArielPalazzesi  03092014, 07:20 PM
RE: How fast is the HP Prime?  eried  03092014, 07:22 PM
RE: How fast is the HP Prime?  HP67  03102014, 03:07 PM
RE: How fast is the HP Prime?  eried  03102014, 05:21 PM
RE: How fast is the HP Prime?  HP67  03102014, 05:56 PM
RE: How fast is the HP Prime?  jebem  03102014 07:34 PM
RE: How fast is the HP Prime?  HP67  03112014, 10:34 AM
RE: How fast is the HP Prime?  Han  03102014, 03:13 PM
RE: How fast is the HP Prime?  CR Haeger  03102014, 09:55 PM
RE: How fast is the HP Prime?  Chris Pem10  03122014, 04:30 AM

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