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H/PC Philosopher Posts: | 304 |
Location: | United States | Status: | |
| Quote Rich Hawley - 2006-03-30 7:45 PM
I then increased the speed incrementally until the default cpu speed of 400mHz. Seemed to work just fine in that area. I then increased the speed up to the max 796mHz. The programs all ran fine, but I didn't notice any speed increase over the 400 mHz speed. None, zilch, zero! Weird.
Rich
Dunno what options the software you used allow you to change, but there are three clock speeds that PHM lets you adjust: The CPU Clock (usually 400MHz ), the FSB (Usually 100MHz ) and the RAM clock (usually 50MHz ). It may very well be that the bottleneck isn't CPU cycles, and that a faster CPU won't help. If you can increase the FSB and RAM clock settings, that might improve the speed. In fact, I usually run my Axim at 400/200/100 instead of the default 400/100/50. Most things seem to render faster at this speed, but 600/200/100 isn't much of an improvement over 400/200/100 |
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| I don't know why you didn't encounter a noticeable speed increase at faster speeds. It was quite noticeable in quantifiable ways in the programs I ran (timedemo in quake, video benchmark in TCPMP and the BMQ benchmark app). Compare the results from BMQ on a stock Netbook Pro at 400 mhz vs 796 mhz.
At 400 mhz
Integer:1207
Float:108
Draw:248
Window:255
Memory:1334
Total:630
At ~800mhz
Integer: 1639
Float: 148
Draw: 312
Window: 243
Memory: 1716
Total:811
Edited by Rocketman 2006-03-31 1:25 AM
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| could you post some before and after benchmarks from TCPMP? I'm really interested in knowing how usable the Netbook Pro is for video playback. I know it can't hold a candle to the Sig3 given its lack of a video chip, but please post the parameters of the sample video (bitrate, size) and the fps achieved before and after overclocking to give me an idea.
thanks! |
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| I used the larger of the two Lord of the Rings trailers, which used to be available at the TCPMP website. I believe the video was around quarter vga resolution at 30fps. If I recall (and don't hold me to this, it was a while ago ), the Netbook Pro when 2x overclocked was averaging playback at about 160%, which is enough margin for processor intense scene transitions at normal playback speeds. I could play back the same file comfortably at 1x resolution, but any zooming was too processor intensive and resulted in tearings and lower frame rate. Also, there was a bit of crackle in the audio. I experience this same crackle at normal clock speeds as well. It may be a problem with my individual unit. As I have never enountered another person with a Netbook Pro, I have no basis for comparison as to whether the crackle is normal. Anyways, the video was watchable, but not my idea of a great cinematic experience 
The Netbook Pro will just never make a good video playback platform, without a dedicated accelerator card. |
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H/PC Elite Posts: | 660 |
Location: | Florida, US | Status: | |
| what program are you using for overclocking the ARM processor of the 72x?? |
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H/PC Oracle Posts: | 16,175 |
Location: | Budapest, Hungary | Status: | |
| ipaqclk.exe  the ipaq overclocker for the strongarm. works fine on the jornada too |
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| I should add that in my experience, although the ipaqclk.exe overclocking program does indeed work on the Jornada 720, it renders it more or less useless. When I tried overclocking mine, the CF and PCMCIA card slots stopped working. So, unless you have a use for an overclocked Jornada with no expansion ability, I can't recommend it. |
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H/PC Oracle Posts: | 16,175 |
Location: | Budapest, Hungary | Status: | |
| as i said it works fine on my first j728, even the cf works and activesync too 
didn't try it on the other 728's, only on my first j720 (since then its a 727 ), and there i did have the same problems as you. so the 728 must be better or is it just a luckier jornada? |
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| No clue. I would love to hear from others. It may be that some CF/PCMCIA cards don't card about running out of spec, rather than the overclocking causing the slot controller chips to fail. I would be curious to see more systematic testing. Anyone else want to risk frying their Jornada in the name of (mad) science? |
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H/PC Oracle Posts: | 16,175 |
Location: | Budapest, Hungary | Status: | |
| um, well, i used the same CF in them....
ok, i'll experiment a little.. |
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| I'm just trying it on my Netbook Pro now.
Does anyone know what the checkbox at the bottom of the PXA255 screen is. ...ON........ ?
Seems I need it set to get the overclocking to work.
regards
geoff.
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Factorite (Elite) Posts: | 111 |
Location: | Arhem, The Netherlands | Status: | |
| I have tested it on my Sig 3:
100 Mhz: 183
118 Mhz: 227
133 Mhz: 258
200 Nhz: 383
236 Mhz: 458
266 Mhz: 511
300 Mhz: 515
354 mhz: 621
400 Mhz: 672
472 Mhz: 800
530 Mhz: 902
600 Mhz: 821
708 Mhz: 845
600 Mhz or above and the Sig isn't stable anymore.
So I get maximal 902 points (stable ). This means that the Sig 3 is the most powerful handheld, it beats the netbook @ 800 MHhz!
Arrrrg, sorry, I didn't see the last post date......  Edited by theodouma 2007-02-27 5:15 PM
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| My sig seems to run fine at 796 (though it won't be there for long)...
I'll dig out the benchmark program soon and give it a go.
John
Edited by mr-mac 2007-04-23 3:42 PM
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Edited by mr-mac 2007-04-23 4:51 PM
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| OK using Geared2003's media player 1.01 with catalyst benchmark avi...
208.69% at 400
253.81% at 472
289.71% at 530
at 600 mediaplayer exits part way through vid |
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