The chinese calculators community
cnCalc.org had the honor of being invited by Casio China in its skyscraper in Shanghai.
At the corner of a corridor, cnCalc could find the full paper version of the Prizm fx-CG20 color calculator manual, which is not included with the calculator.
But here is the real purpose of the visit, the comparative test of the new ClassPad fx-CP400 color calculator of back to school 2013!
Many reference models were therefore available at Casio China to achieve an accurate comparative test:
Texas Instruments calculators:
- TI-92
- TI-Nspire CM-C
- TI-Nspire CX
Casio calculators:
- fx-5800P
- fx-9750Gii
- fx-9860Gii
- fx-9860Gii SD
- ClassPad 330 Plus
Hewlett Packard calculators:
CnCalc welcomes the great attention that was ported to the design of the fx-CP400, and the high quality of its screen.
For the drawbacks, we note some criticisms of the minimalist keyboard and the difficulty of entering expressions on the touch screen, but it might be because the touch screen interface needs the user to be used to it.
More importantly, cnCalc finds the fx-CP400 performances disappointing . Although more powerful than the ClassPad 300/330, the fx-CP400 is more than 2x slower as the Prizm fx-CG20 for running BASIC programs.
As a comparison, the Prizm fx-CG20 would have to be downclocked from 58MHz to 25MHz for similar performances...
This is due to the additional cpu-time needed to handle the huge color screen.
The fx-CP400 therefore has the same performance problem as the TI-84 Plus C Silver Edition.
Crossposted from:
http://tiplanet.org/forum/viewtopic.php?t=12677&lang=en
