I have heard even our Xscale processors perform just
about the same as other 200 MHz machines.. SO I wont
be leaving this program on, also I did not notice
any increase... not enough to get me excited anyway..
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This might be somewhat Ok for the 400's, but I wouldn't try it on a 300.
i have a 300 mhz basic axim and i run tubo tray 498(498 mhz) with pretty much no problems. i see big differences in emulators such as pocketsnes and pocket nester, but thats about ill i can say is exciting. its a good thing i bought the basic axim because i can easily pass 400 mhz and i have a 512 mb cf card anyway so i dont have to worry about the 32 megs of ram/storage.
Originally posted by Chrissss This might be somewhat Ok for the 400's, but I wouldn't try it on a 300.
From what I've read, the processors in all the Ax's are the same. During frequency testing they try to run the processor up to 400+ MHz. Those that pass go into the 400's. Those that pass the 300 mark, but destabilize before 400 MHz become the processors for the 300 unit.
Therefore attempting to push the 300 up to 400 is doomed to failure.
I can't vouch for the validity of the above...it's just what I've read here & there. Others more knowledgable then I can perhaps confirm/deny this.
Chris...
You have it right, but "doomed to failure" is a bit strong. Some of the 300's will run 400, even 500, but it's not consistent and there may be other reasons it was marked as failed at 400 (overheating, erratic performance when hot, power consumption, etc, etc, etc) It's entirely a crap shoot on whether it will work and what the outcomes will be.
Having said that, I bought PocketHackMaster to try on my 400, but I wanted to throttle down to 100 to stretch the battery. Most of what we do doesn't require high speed, and slowing down to 100 definitely adds battery life. I'd say you get 20-25% longer at 100 than at 200. At 100 I can play .wma files for music and read on the Microsoft Reader just fine, which is what I do on flights as I travel. Long battery life is nice in those situations.
Originally posted by musttang87 i have a 300 mhz basic axim and i run tubo tray 498(498 mhz) with pretty much no problems. i see big differences in emulators such as pocketsnes and pocket nester, but thats about ill i can say is exciting. its a good thing i bought the basic axim because i can easily pass 400 mhz and i have a 512 mb cf card anyway so i dont have to worry about the 32 megs of ram/storage.
How many FPS increase did you get and with which ROM?
Cheers.
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in pocketnester i get about 17 fps at 300 mhz and 32 at 498 mhz. im not sure how to check fps on pocketsnes, if it is that number out of 60(xx/60) then i get 8 fps(8/60) on 300 mhz and 19(19/60) on 498 mhz. i tested street fight 2 tubro and it plays at 80% speed without sound(on 498 mhz)
Originally posted by musttang87 in pocketnester i get about 17 fps at 300 mhz and 32 at 498 mhz. im not sure how to check fps on pocketsnes, if it is that number out of 60(xx/60) then i get 8 fps(8/60) on 300 mhz and 19(19/60) on 498 mhz. i tested street fight 2 tubro and it plays at 80% speed without sound(on 498 mhz)
Sweetness, almost 100% performance gain on pocketNester! Gonna give this a try. Any gripes you have about this OC program? Does it freeze a lot when you play? How's the battery life b4 and after?
Cheers.
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Originally posted by silentknight I have heard even our Xscale processors perform just
about the same as other 200 MHz machines.. SO I wont
be leaving this program on, also I did not notice
any increase... not enough to get me excited anyway..
The problem is the bus
The XSCale versiojn we have has a 100Mhz bus
in the old StrongARM processors it is actually a little faster (~110MHz) so that's why in some operations the older machines are even faster
There is a new XSCALE chip from intel called PXA255 (the current one is PXA250) that has a 200Mhz bus
you can read a little about its performance on brighthand : http://www.brighthand.com/article/PX..._Previous_Chip
What happens if you use this program to set your Axim to 500 mhz, but you have the "powersave" or "auto" funtion on in the power menu? Does it continue to run at a steady 500 mhz? Even when the power screen tells you it's running at 200 or 400?
The PXA250 actually has the ability to do a 165.89MHz memory bus, however i am assuming that it is terribly unstable or something similar.
(this is according to the "PXA250 and PXA210 Application Processors Developer's Manual" (look at the CCCR register)
Anybody know how that oc tool works?
The only way i can see it getting 500MHz on a pxa250 is:
* Leave the memory bus at 99.53MHZ
* Set run mode to *2 multiplier (199.06Mhz)
* Having the turbo mode at *3 multiplier
However, this would give 597.18Mhz!!!
And does it do anything to the core voltage? I would assume it would have to do something?
btw: it's probably not such a good idea to run at 500MHz for a few reason:
A, overheating (these things dont have fans, or even heat sinks)
B, power consumtion, the board is designed for the power consumption of a 300/400MHz chip,
But, its your axim, make your own decissions ;)
btw: having a
165.89MHz Memory bus
*2 run mode multiplier (331.78MHz)
*3 Turbo Mode multiplier
= 995.34MHz
So its possible to get almost a GHz on the technology the pxa250 uses... though i would NOT recomend ANYBODY trying this on a current gen pxa250 or 255 ;)
Dunno if this info mation is acurate, just stuff out of manuals..
j;)
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Originally posted by Chrissss From what I've read, the processors in all the Ax's are the same. During frequency testing they try to run the processor up to 400+ MHz. Those that pass go into the 400's. Those that pass the 300 mark, but destabilize before 400 MHz become the processors for the 300 unit.
Therefore attempting to push the 300 up to 400 is doomed to failure.Chris...
This is generally the way CPUs are selected by Intel. However, as their production gets better most of the CPUs made will be of higher quality so they will get more 400MHz units than 300MHz ones.
If the market demands more 300MHz units than they have, they will use 400MHz units running at a lower speed for the 300MHz PDAs. So overclocking the 300MHz Axims could be a crap shoot where some work fine and some won't.
As an aside, the small percentage of performance gain by overclocking, especially in running the 400MHz units at 500MHz, is rarely worth the component stress and potential premature failure of the CPU due to the additional heat generated.
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