im going to overclock soon.... but i also want to wait for pr 1.2 ... should i do no or later ?

how to overlock Mhz setting ???

AP set Still cant make 3G video call?

ask mr google for full details.

I am concern on batt life and the lifespan of proc. if batt good and lifespan last 4 years me into the oc....

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Added on April 6, 2010, 10:04 amby the way the speedtest in my sig is via my n900

This post has been edited by firstknight: Apr 6 2010, 10:04 AM

Here's my quick guide for the first timers in this thread:
(Summarised information of everything I see in this thread)

Benefits of Overclocking:
- Faster loading of most apps.
- Faster bootup and shutdown.
- Faster / smoother transitions
- Faster game emulation (DrNokSnes, PSX4ALL etc etc)
- Faster camera. Faster focusing and image processing.
- Near zero frame skips during video recording.
- Faster multi-tasking. Handle more apps.
- Faster web page rendering. Faster flash playback.

Downsides of Overclocking:
- If you put constant full load at maximum speed, it may overheat. Possibly HW damage.
- If cpu cannot handle the overclocked speed, phone will become unstable. (aps crash, file corruption etc)
- Possibly reduce the lifetime of the device. (This is just theory)
- If max speed is used very frequently, it may use a bit more battery = less runtime. (but not by much still)

Jakiman's N900 Overclocking Summary:
1. Overclock is done by flashing the modified kernel using maemo flasher.
2. No setting or data gets changed/deleted. So it is a transparent flash.
3. In stock form, N900 scales between 250Mhz and 600Mhz dynamically.
4. With Lehto's kernel, it scales between 125Mhz and xxxMhz dynamically.
5. So in theory, during idle, it may actually even use less battery.
6. In most normal everyday use, I do not expect any extra battery usage.
7. Flashing takes literally about 1 second to do. Very quick and painless.
8. If something goes wrong after flashing, just reflash the stock kernel back.
9. So far, majority have reported theirs to work just fine up to 900Mhz.
10. 1ghz kernel is not available to public "yet" due to liability concerns. (seems Lehto pulled out 900Mhz also? as of my last update time of this post)
11. There are also kernels which overclock not just the CPU but the DSP.
12. The real-life benefits of DSP overclocking is not yet certain it seems.
13. When PR1.2 update comes out, I recommend you to reflash to the stock kernel (method below) before updating.
14. PR1.2 may have newer kernel so once you update to PR1.2, we may need Lehto to create newer version of modded kernels.
15. There is no cpu temperature monitoring app / widget / script currently available. (see my last update time of this post)
16. We currently have NO DATA to determine what short term or long term damage this will do to your N900.
17. What we do know is that it makes the N900 super duper fast and to most, that's all that matters it seems.
18. It stays idle at 500Mhz when charging from the USB cable via PC. (normal behaviour)
19. However, it will idle at 125Mhz when charging from AC adapter however.

Quoted from Jakiman @ maemo.org

After OC, no more lags in YouTube as read from several OC's comments.

Maybe wait for PR1.2 first,

Thanks for correcting~

Btw, for the Cortex-A8 processor, it is capable of 600Mhz to greather than 1Ghz, so I don't know current 600Mhz is underclock or 600Mhz-1Ghz is within safe range?
Possibly to achieve better battery life and also possibly so prevent too much heat, they decided to clock at 600Mhz? No idea, but I know the Droid/Milestone have been OC for months now.

http://www.arm.com/products/processors/cor...a/cortex-a8.php

Cortex-A8 Processor
The ARM Cortex™-A8 processor is based on the ARMv7 architecture and has the ability to scale in speed from 600MHz to greater than 1GHz. The Cortex-A8 processor can meet the requirements for power-optimized mobile devices needing operation in less than 300mW; and performance-optimized consumer applications requiring 2000 Dhrystone MIPS.

maybe overclocking it at 700-750mhz should be safe enough just to get a feel of it?

interested to O/C to 900 mhz

what is the original Mhz for n900 ???
if i didnt set for it ?

lol abit scared to wack it all the way to 900mhz tho

The reported stable OC is 800Mhz, also for the droids.

Currently, many have OC to 900Mhz and also reported stable so far, and improvements over 800Mhz.

But so far, for N900, OC is still new, not even 5 days since it was first OC.
But the droid (aka milestone) have OC for months now.

Check out the app for adjusting the clock speed for the Droid (aka Milestone). Cool app, similar to my Dell PocketPC, which allow adjustment of clock speed at runtime, but my Dell version is not for OC, is for limiting the clock speed.
http://rootyourdroid.info/guides/overclocking-the-droid/

question is how is the drain of battery life?

oh my.. n900 is quiet nice.. rely interested to take it.. btw currently market price is how much? it look like n97

just hope it will help to reduce battery consumption as it will run idle at lower speed ( 125 vs 250 ? )

@nic

Stock speeds for a stock N900:
CPU: unused / 250mhz / 500mhz / 550mhz / 600mhz
DSP: 90mhz / 180mhz / 360mhz/ 400mhz / 430mhz


anyone dare :

Mostly reported better battery life.

But if constant usage on high processing, that's a different story.

On ordinary use, most claims better battery life. I think the possible explanation is because there is more power available, it is able to reduce processing time and generally shorten high cpu usage.
Example are boot up time is greatly reduce, loading of Conversations is fast, browsing experience is greatly improved.

For my personal use, currently non-OC version, whenever I go online, my phone will be on constant 100% CPU usage for few seconds (didn't measure how long, possibly 10s). I wonder if after OC, the processing time will be reduce?
During the constant 100% usage, if I try to run the browser, it will lag badly. So, I suppose OC will change this completely.

But I'll wait for PR1.2 first, it's said to have improvements on the browsing experience (faster) and possibly improve other speeds as well. After proper improvements/tuning, it might not really require to OC, who knows. The Maemo is currently still new and have lots to improve.

OC is definitely an option, but I would prefer to have something like the app available in Android. It has several features like auto-detect the max clock speed suitable for your device, CPU Governor, Profiles settings (limiting Charging clock speed, Sleep/Standby, Power < 30%, Failsafe, etc).
Hopefully, something similar will be available for Maemo in future or soon
http://rootyourdroid.info/guides/overclocking-the-droid/

Thanks for the review. I will try overclock it alittle not until 900mhz maybe at 700mhz or 800mhz. Like what u said maybe in the next firmware they improve so maybe overclock not even necessary possible

haven't really tested the battery life drain yet. i just left the phone with wifi connected when i sleep for about 6hrs. battery indicator still show full tho. u guys don't wanna try it? . but take note, some people say that after flashing the OC kernel, when u go to Settings, About, it will show Nokia N900 <unknown> version: <unknown>. i did the on device flashing method, my info still stays after flashing the OC kernel

I think overclocking to 1GHz too risky.Maybe 700-800MHz much safer.

1st time posting here with N900

how is the performance like? I am still thinking whether should i overclock mine or not? My battery indicator very accurate. Not like my older nokia phone for the first 5hrs full bar then suddenly next min drop 4bars. I used my N900 for 3 hrs i realize the battery indicator start to drop 1 bar di

me using batt widget so can see percentage. it is accurate so i use it to see when to stop using and off all unnecessay stuff til i find a place to charge my phone.

oc seems very temptin to at least improve performance as long it doesnt damage the phone much.... hehe