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12 Posts

03-28-2008

usa

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R61 cpu speed slowed down

2008-05-26, 22:19 PM
Hello,
 
I have an r61 thinkpad with a t8300 core 2 duo. Originally the processor ran fast, 2.39 ghz or so... but now, the speed dropped to 1.17 ghz for some reason. Is there anyway to fix this? Is it saving up power or what?
 
Much help will be appreciated.
 
Thanks.
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1991 Posts

05-17-2008

USA

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Re: R61 cpu speed slowed down

2008-05-27, 1:19 AM
it is made to do that it has intel speedstep technology if you run an application that needs to run at full speed it will



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12 Posts

03-28-2008

usa

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Re: R61 cpu speed slowed down

2008-05-27, 1:24 AM
Ok, I understand that. However, I have been using power manager to go from "Maximum performance" to "Power Source Optimized", etc etc, and still the cpu speed in the general tab of system properties stays at 1.17 ghz, not 2.39 how it was before. It doesnt change back to 2.39, even when I change the power options. It used to run fast before... I got super pi down to 49 secs for 2M, now it takes around 2 mins or so. How do you make the processor run at full speed for a specific application? I dont understand that.
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7651 Posts

11-24-2007

USA

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Re: R61 cpu speed slowed down

2008-05-27, 12:10 PM
Have you adjusted your power settings in BIOS to "fixed max" for CPU performance?
 
BTW, you have a very powerful CPU and it's not likely to run at full speed unless pressed really hard...
 
If you're running XP, you may want to Google around for a little utility called "Speedswitch XP", it's pretty handy in helping the CPU management. I don't know whether there's a version for Vista, I haven't heard about it.
 
Good luck and let us know.
Cheers,

George




In daily use: R60F, R500F, T61, T410

Collecting dust: T60

Enjoying retirement: A31p, T42p,

Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W




Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.
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1 Posts

07-04-2008

malaysia

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Re: R61 cpu speed slowed down

2008-07-04, 10:14 AM

Hi, i also face the same problem like you. But after i read the thread below, now i understand it is my lenovo ac adapter problem. 

 

http://forums.lenovo.com/lnv/board/message?board.id=X_Series_Tablet_ThinkPads&message.id=808&query.id=279#M808 

 

I do the test with using my friend original lenovo 90w ac- adapter, i found that my R61 can run in full speed at all the way.  Here i need to mention that what have i test:

 

Before that i already set my R61 in Maximum Performance ( Bios & power management)

 

1. I plug in my own original 65w lenovo charger + Plug in battery = It can run in full speed - 1.99GHz

2. I plug in my own original 65w lenovo charger but without plug in my battery = It cannot run in full speed, it only can run in 1.19GHz

3. I plug in my friend original 90w lenovo charger + Plug in battery = It can run in full speed - 1.99GHz 

4. I Plug in my friend original 90w lenovo charger but without plug in my battery = It can run in full speed - 1.99GHz 

 

So What to say????  -_-II

 

Regards,

John 

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