cloaked

Hmm, me and a guy I know that owns an Ipaq 3970 have been doing some interesting tests with simple code.. We're both running PPC2002, his is the 400/PXA250, mine's 400/PXA255.

All the code does is copy some memory to the screen and display the framerate at which it manages to do so.

Seems like the _exact_ same code runs TWICE as fast on his machine as it does on mine... the bottleneck seems to be writing screen memory (using GAPI).

Memory in general doesn't seem to have anything to do with it (actually runs faster on mine than on his with NO screen access)

Also I found this page on the net which might be interesting as well:
http://www.spraguetech.com/results.html

Any ideas? I'm going to contact dell tech support and see if I can get a technical answer from them...

cloaked

You can download this app:
http://www.eternal-dreams.org/temp/fpstest01.exe
and try out yourselves.. this gives me about 40fps on my Dell Axim X5 (freshly hard-resetted) and it doesn't matter if I clock it to 200 or 400 Mhz using the Power applet, I still get the same FPS!

cloaked

oh, btw.. as a side note.. as the x/y pitches on the Axim are linear (i.e. 0,0=topleft) I've tried using memcpy as well to blit to the screen, this gives me about 45fps instead of 40..

on the 3970 this doesn't work as all as the screen is oriented 0,0=bottomleft (which to me sounds like it would be slower than the linear model of the Axim)

Chrissss

From what I understand, many Ipaq's have a seperate video controller processor, whereas the Ax runs it from the main processor. If that info is correct then it would explain why the Paq's are so much faster at screen rendering.

Chris...

slease

and why the ipaq 3000 series costs alot more than the axim, you get what you pay for, of course it'll be a bit better.

__________________
Stephen Lease

Axim Basic, 256mb CF, 64mb SD, Rhinoskin Case, Pocketop Keyboard.

<a href="
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Homepage</a>

KenBuzz

Quote:

Originally posted by slease and why the ipaq 3000 series costs alot more than the axim, you get what you pay for, of course it'll be a bit better.

That doesn't make sense to me. If costlier is better, how do you explain Palms? :D

Jer

Quote:

That doesn't make sense to me. If costlier is better, how do you explain Palms?

It's called "Brain washing". Oh, did I say that out load? My bad.

__________________
Advanced/PXA255(2k3 upg)
SD: 256Mb(Lexar) CF: 256Mb 12x(Lexar), 256Mb(Simpletech), 256Mb(Kingston)
DLink DCF-660W Wifi / DLink Wireless Router(DI-764)

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

slease

lol, palms are exceptions.

__________________
Stephen Lease

Axim Basic, 256mb CF, 64mb SD, Rhinoskin Case, Pocketop Keyboard.

<a href="
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Homepage</a>