mtbballer

Sorry - I didn't see where you posted that. This thread has gotten pretty long!!

JmE

Yes, the thread did get long. I think it was worth it though. Now that I look at table 3-1 for the PXA250 and Table 3-1 for the PXA255 it all makes sense now. I hope it has really added to all of our knowlege of our Axims and the PXA255 in general. I am very thankful to all, you included of course, who took the time to post.

I think I am going to get some well deserved sleep and let my neurotransmitters build back up! :D

-JmE-

mtbballer

Amen to that!! One thing I've learned, though is that the tables are helpful in accomplishing your Axim objective. It gives you some flexibility on where to alocate the PXbus's horsepower (if you feel like tinkering around with the settings) and what you would like it to be like in various states. Be it memory, processor, whatever. I don't know what the Axim issue is with WM2003, but I'll be happy if its along these lines. Has anyone sent all or part of this thread to Dell? Not that they will look at it much or it will solve the problem, but it certainly couldn't hurt...

JmE

Quote:

Originally posted by mtbballer Amen to that!! One thing I've learned, though is that the tables are helpful in accomplishing your Axim objective. It gives you some flexibility on where to alocate the PXbus's horsepower (if you feel like tinkering around with the settings) and what you would like it to be like in various states. Be it memory, processor, whatever. I don't know what the Axim issue is with WM2003, but I'll be happy if its along these lines. Has anyone sent all or part of this thread to Dell? Not that they will look at it much or it will solve the problem, but it certainly couldn't hurt...

Remember, there are overclocking settings that don't break the parameters defined in the table but can give performance above and beyond. For example, there are Pocket Hack Master settings that allow for 472 MHZ and the like on a PXA255 Axim Advanced. I am expecting a final version of Pcoket Hack Master v2.41 with updated profiles for the PXA255 tomorrow or so. Many settings out there are tried and true. There are also differences in different Pocket PCs like RAM speed, etc that can affect what the setting can be. All and all I have been pretty happy with my Ax.

Also, I did send the original info and then later the summary on to Dell in an email and on their handheld hardware forum.

Unfortunately, it doesn't look to me now like this PXBus stuff is linked to the WM2003 slow down.

-JmE-

steelvulture

Here are my experiences using PXA255 and WM2003:

Maximum Performance setting sets the pxbus to 199. Normal, PowerSave, or Auto uses a pxbus of 99. Going to Max or from to Normal, Save, or Auto sets the pxbus back to 99. Under Hack Master and Max Performance, using fetch gets the L/M/N settings of 27/4/1. When using Hack Master under Normal/Save/Auto, fetch gets the L/M/N settings of 27/2/2.

For real world performance gain on WM2003, Maximum Performance or using Hack Master to set L/M/N/ to 27/4/1 does yield noticeable improvement. When using File Explorer, the file listing for the Windows folder comes up faster. Loading roms in PockeSNES is MUCH faster than loading when using Normal. Haven't really tried anything else. The 199 bus does see a noticeable increase in performance in some areas using WM2003, but I don't think that is the problem with WM2003 because in some situations, my Axim still feels laggy even with the extra bus.

Planet-II

No the ipaq 2210 does not have autoscale like the axim.

Theebag

Hello , this is a verry interesting topic .

I've been testing with my axim and here are the results .

I'm playing a verry heavy mpg movie with PocketTV.

L=1 M=2 N= 4 : Speed 398 , Pxbus 99 : 12.22 Fps
L=1 M=2 N= 6 : Speed 597 , Pxbus 99 : 14.33 Fps
L=1 M=3 N=2 : Speed 398 , Pxbus 199 : 14.34 Fps
L=1 M=3 N=3 : Speed 597 , Pxbus 199 : 15.84 Fps

L M N settings above are reported with CPUID

But in Advanced XScaleCtrl their diffrent :
L=27 M=2 N=2 : Speed 398 , Pxbus 99 : 12.22 Fps
L=27 M=2 N=3 : Speed 597 , Pxbus 99 : 14.33 Fps
L=27 M=4 N=1 : Speed 398 , Pxbus 199 : 14.34 Fps
L=27 M=4 N=1.5 : Speed 597 , Pxbus 199 : 15.84 Fps


So what can i conclude : To bus speed is the real bottleneck for the Xscaler . An 400/200 Mhz is as fast as an 600/100 . Pretty strong stuff

Can somebody confirm my experiences ?


Ow yea forgot to mention : Dell Axim X5 Advance PPC 2002

snathanb

Just curious.... I wonder what the effect in terms of power consumption/battery life is for switching the PXBus from 99 to 199?

Magadin

I was actually wondering the same thing. Personally, my battery never really get's below 70%, it's usually in the charger when I'm not using it. I would bet it decreases battery life, but not too substantially. If I get a chance to test it today I will post back...

__________________
It is impossible to make anything foolproof, because fools are so ingenious.
-Murphy

mtbballer

I had a similar thought through all of this yesterday. The following document (provided by Intel) has power consumption. In section 4.2, table 4.8 has power consumption rates, based on the speed. I think it's safe to say that your power consumption increases when you increase the speed of your processor/bus. In the table, it looks like you will use 230 mA extra for every 100MHz faster you run your processor (if the processor is maxed). So, for the 27,2,2 setting on the PXA255, in normal mode, you'll be drawing a max of 340 mA. However, if you change your LMN settings to 27,4,1, in normal mode, you'll always be running at 400 MHz and the max power consumption for that is 800 mA.

http://developer.intel.com/design/pc...s/27878001.pdf

Keep in mind that I'm not sure if I'm reading the table correctly. Check out the document and see what you think. Either way, it's safe to say that the higher frequency you run your processor and bus, the more power will be consumed...

snathanb

Just did a little testing myself..

I've been playing around XCpuScaler, using Hackmaster to read back what LMN settings XCPUScaler is using for the different MHz ratings.

I've got an X5 Basic with the PXA255 processor, running PocketPC2002.

The default LMN Settings for the Basic are:
27/2/1.5, which is a Run Mode of 200 and a Turbo Mode of 300.

The basic runs without a hitch at the default settings for the Advanced (27/2/2). No big suprise there to me, as it is the same CPU. I don't even consider this to be overclocking at all, since it is the same processor/arch. as the Advanced.

I have had no trouble at all running the Basic at a setting of 32/2/2, (The 472 Mhz setting in XCPUScaler). This setting bumps the PXBus and Memory Bus to 118 Mhz, according to Hackmaster.

daximx5

I installed hack master, and when it was in the corner of my today screen, I cliked it and looked under cpu or something and saw 900 something mhz...I was like "aww cool 900 mhz" so I changed it and now my axim wont turn on....

Magadin

I have noticed a little increase in battery life @ 597 Mhz
The system does, however, run very stable at this speed.
Still have concerns about damage to the system, this is a 50% increase in the processor rating and I haven't really noticed a big increase in performance with it.

__________________
It is impossible to make anything foolproof, because fools are so ingenious.
-Murphy

Magadin

Quote:

Originally posted by daximx5 I installed hack master, and when it was in the corner of my today screen, I cliked it and looked under cpu or something and saw 900 something mhz...I was like "aww cool 900 mhz" so I changed it and now my axim wont turn on....

At all? I am assuming you have tried AC power, soft and hard reset and the like. Can also tried removing both batteries and reseating, this may have the same effect as a hard reset (Can anyone confirm or deny this?)

__________________
It is impossible to make anything foolproof, because fools are so ingenious.
-Murphy

Damoosemander

:rolling:
I just bought my 1st PDA. and it took for ever for Dell to deliver. Many excuses then finally it came /w 2003. apparently that was the hold up. Over a month in waiting!

My Dell Axim X5 400Mhz seems to be working pretty good, when I can get it turned on! Every 2-3 days I have to do a hard reset (Hold the Reset button on the side and the I/O button down for approx. 3 seconds. Then I have to do a full reset.

Once I do that it works. I hope that helps, any thoughts on my problem? with no reason at all I can't turn it on until I do a Full reset???

Thanks in advance for any help