08-25-2015, 08:40 AM

Hi All,

While I'm comparing graphing capabilities beetween my HP48S/GX/49G,

I was wondering seeing that in some cases the 48S was faster than the 48GX, and the 48GX was faster than the 49G !

In fact, the 48GX and the 49G INFORM's dialogs add extra computation time VS a simple << ERASE DRAX DRAW >> .

But, the 3D graphing tools show me an even bigger computation time difference, see below :

Benchmarked calculators :

HP48S ROM rev J + SUITE3D 4.0

HP48GX ROM rev M (the slowest I own, only 3.6Mhz !)

HP49G ROM 2.10-7

HP49G ROM 1.24

HP49G+ ROM 2.15

Benchmark test (from the HP48GX Graphics book by Ray Depew) :

PPAR / VPAR:

EQ: 'SIN(X)*SIN(Y)'

XVOL: -PI PI

YVOL: -PI PI

ZVOL: -1 1

XXRNG: -PI PI

YYRNG: -PI PI

WIREFRAME:

X-STEP: 10

Y-STEP: 8

PS-CONTOUR:

X-STEP: 20

Y-STEP: 16

Program:

<< << ERASE DRAW >> TIMED >>

(TIMED: from HP48 Insight by Bill Wicks)

Benchmark results:

WIREFRAME:

HP48S: 44.33s

HP48GX: 32.45s

HP49G: 47.98s

PS-CONTOUR:

HP48S: 2mn 52s

HP48GX: 5mn 03s

HP49G: 18mn 09s

HP49G+: 4mn 54s

Is there any flags that can explain why the HP49G was so slow ?

While I'm comparing graphing capabilities beetween my HP48S/GX/49G,

I was wondering seeing that in some cases the 48S was faster than the 48GX, and the 48GX was faster than the 49G !

In fact, the 48GX and the 49G INFORM's dialogs add extra computation time VS a simple << ERASE DRAX DRAW >> .

But, the 3D graphing tools show me an even bigger computation time difference, see below :

Benchmarked calculators :

HP48S ROM rev J + SUITE3D 4.0

HP48GX ROM rev M (the slowest I own, only 3.6Mhz !)

HP49G ROM 2.10-7

HP49G ROM 1.24

HP49G+ ROM 2.15

Benchmark test (from the HP48GX Graphics book by Ray Depew) :

PPAR / VPAR:

EQ: 'SIN(X)*SIN(Y)'

XVOL: -PI PI

YVOL: -PI PI

ZVOL: -1 1

XXRNG: -PI PI

YYRNG: -PI PI

WIREFRAME:

X-STEP: 10

Y-STEP: 8

PS-CONTOUR:

X-STEP: 20

Y-STEP: 16

Program:

<< << ERASE DRAW >> TIMED >>

(TIMED: from HP48 Insight by Bill Wicks)

Benchmark results:

WIREFRAME:

HP48S: 44.33s

HP48GX: 32.45s

HP49G: 47.98s

PS-CONTOUR:

HP48S: 2mn 52s

HP48GX: 5mn 03s

HP49G: 18mn 09s

HP49G+: 4mn 54s

Is there any flags that can explain why the HP49G was so slow ?