Posts:
14
Registered:
May 16, 2006
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SMC Firmware Clamps Processor Speed?
Posted:
May 16, 2006 8:27 PM
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Just installed the SMC firmware update.
Cooler: Running CoreDuoTemp v0.51, I couldn't push the temp past 70, whereas I reached mid 80's before.
But SLOWER: I can't (according to the CoreDuoTemp program) push it past 1000Mhz, the chip's minimum. It used to idle at 1500, and push to 1830. To boot, things like iTunes visualizer are noticeably slower.
So...well, this would obviously explain the heat difference. It's nice having a cooler operating temp, but are we really capped at 1.0 Ghz to get it? Can anyone else confirm?
BTW, is there any other program that will give a readout of current clock speed?
1.83 MacbookPro
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Posts:
9
Registered:
May 6, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 16, 2006 8:37 PM
in response to: Mardacious
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I have not noticed any speed issue yet (ran CoreDuoTemp before and after the SMC update) besides that the CPU is about 5ºC cooler. The CPU is hovering around 1.5GHz.
MBP 1.86GHz/1GB, iMac G5 20" 1.8GHz/1.25GB, PB 500MHz/1.0GB, PM Dual 1.8GHz/1GB
Mac OS X (10.4.6)
Ex: Turbo Mac, Oreo, Foster Farms, Piltdown Man, Montana 7600, Pismo
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Posts:
1,608
From:
London
Registered:
Apr 2, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 16, 2006 8:41 PM
in response to: TimTheEnchanter
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I've done this update and haven't noticed any changes at all, heat or otherwise, however when I run CoreDuoTemp it's at 1500MHz, which is about normal under basic load I guess?
Also I note the lowest it really even goes is 1333 on AC or battery, which is sad as I'd hope it'd go to 1000 on battery as it does under XP. Couldn't battery life improve it it dropped to the minimum?
Nick
MacBook Pro 15.4"
Mac OS X (10.4.6)
1.83GHz Core Duo, 2GB RAM, 100GB @ 7200RPM
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Posts:
49
From:
Duesseldorf, Germany
Registered:
May 4, 2005
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 2:33 AM
in response to: Mardacious
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With the SMC Firmware update installed,
CoreDuoTemp 0.51 shows me this:
Temp: up to 83°C
CPU usage: 100%
Current frequency: 2000 MHz
So everything is fine, I guess - no capping.
By the way, I keep my processors busy with two terminal shells open, doing "yes > /dev/null" for about ten minutes.
MacBook Pro, 2.0 GHz, no moo, no whine
Mac OS X (10.4.6)
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Posts:
4
Registered:
May 17, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 2:38 AM
in response to: Thorsten Zoerner
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i've done it.
my macbook pro has speed only 1000 Mhz.
how can i do?
Mac OS X (10.4.6)
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Posts:
13
Registered:
May 11, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 3:30 AM
in response to: Mardacious
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My unit is 2.16, once upgraded the speed is locked @ 1000mhz.
Tried with some regular software, very slow 
MacBook Pro 2.16g
Mac OS X (10.4.6)
Powermac Dual G5/2.5 8G Ram
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Posts:
61
From:
Kuala Lumpur
Registered:
Apr 20, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 3:31 AM
in response to: Mardacious
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Just did mine, it idles at 1500Mhz. So no problems there.
MacBook Pro 2.0Ghz
Mac OS X (10.4.6)
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Posts:
61
From:
Kuala Lumpur
Registered:
Apr 20, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 3:45 AM
in response to: CapKapak
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Do you peeps also find that the overall speaker volume has increased? I mean mine sounds louder for the same volume level before the upgrade was done.
Or is it just my ears playing up.
MacBook Pro 2.0Ghz
Mac OS X (10.4.6)
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Posts:
36
Registered:
Mar 13, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 3:57 AM
in response to: Mardacious
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I've noticed a definite improvement in heat, but my CoreDuoTemp cpu speed was and is ALWAYS 1500 Mhz. It never has changed.
MBP 2.0 100gb
Mac OS X (10.4.6)
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Posts:
476
Registered:
Nov 21, 2001
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 4:31 AM
in response to: Mardacious
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CoreDuoTemp should be a widget man! That would be awesome.
My average reading is:
Temperature: 64ºC (Hardly gone passed 70% since the SMC firmware update)
CPU Usage: ~
Frequencies >
Mini: 1000 MHz
Max: 2167 MHz
Current: 1667MHz (most of the time)
Don't quite understand the frequency thingy.
MacBook Pro 2.16GHz / 2GB RAM / 100GB 7200rpm HD
Mac OS X (10.4.6)
Mac mini 1.42GHz / 1GB RAM
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Posts:
14
Registered:
May 16, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 4:31 AM
in response to: Thinkology
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Has anyone else noticed the footnote on all the CPU speeds for the Macbook Pros in the online store...
2.0GHz Intel Core Duo(1)
And here is what it reads...
1. The MacBook Pro continuously monitors system thermal and power conditions, and may adjust processor speed as needed to maintain optimal system operation.
Is this because they have had to cap the speed and some may say they are over-stating the performance of the machine?
Smells of Class Action doesn't it?
MacBook Pro 1.8GHz
Mac OS X (10.4.6)
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Posts:
49
From:
Duesseldorf, Germany
Registered:
May 4, 2005
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 4:39 AM
in response to: AT
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CoreDuoTemp should be a widget man! That would be awesome.
Yeah, or even better would it be a menu bar item,
preferably part of the great MenuMeters
http://www.ragingmenace.com/software/menumeters/
MacBook Pro, 2.0 GHz, no moo, no whine
Mac OS X (10.4.6)
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Posts:
40
Registered:
May 17, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 5:03 AM
in response to: Mardacious
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Mine now sits at 1.5ghz when "idle". I've seen it jump *down* to 1.33 when starting Entourage, and then upto 2.0ghz while loading Entourage.
More testing is needed of course, so we'll see how it goes.
As for the "whine"....cant test that yet...too many puters in my home office. Will check that at work.
MacBookPro 15" 2.0Ghz
Mac OS X (10.4.6)
2gig/100@7200
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Posts:
74
Registered:
Mar 27, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 5:04 AM
in response to: Mardacious
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When you first install this update the fan noise you hear is impressive. I have never heard my fans even remotely reach those levels.
MacBook Pro
Mac OS X (10.4.5)
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Posts:
39
Registered:
May 2, 2006
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Re: SMC Firmware Clamps Processor Speed?
Posted:
May 17, 2006 5:38 AM
in response to: Mardacious
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Yeah, I just pop in here to see if someone else is experiencing the same thing. Mine is also stuck at 1000 MHz and even if I use system overloader to increase the cpu load to 100%, it is still at 1000 MHz. This *****.
Macbook Pro
Mac OS X (10.4.6)
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