Skip navigation
This discussion is archived

SMC Firmware Clamps Processor Speed?

8059 Views 94 Replies Latest reply: Jul 17, 2007 7:01 PM by mt2 RSS
1 2 3 ... 7 Previous Next
Mardacious Calculating status...
Currently Being Moderated
May 16, 2006 8:27 PM
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    
  • TimTheEnchanter Calculating status...
    Currently Being Moderated
    May 16, 2006 8:37 PM (in response to Mardacious)
    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
  • Nick A Level 4 Level 4 (1,465 points)
    Currently Being Moderated
    May 16, 2006 8:44 PM (in response to TimTheEnchanter)
    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
  • Thorsten Zoerner Calculating status...
    Currently Being Moderated
    May 17, 2006 2:33 AM (in response to Mardacious)
    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)
  • NSeve Calculating status...
    Currently Being Moderated
    May 17, 2006 2:38 AM (in response to Thorsten Zoerner)
    i've done it.
    my macbook pro has speed only 1000 Mhz.
    how can i do?
    Mac OS X (10.4.6)
  • aitim Calculating status...
    Currently Being Moderated
    May 17, 2006 3:30 AM (in response to Mardacious)
    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
  • CapKapak Level 1 Level 1 (0 points)
    Currently Being Moderated
    May 17, 2006 3:31 AM (in response to Mardacious)
    Just did mine, it idles at 1500Mhz. So no problems there.
    MacBook Pro 2.0Ghz, Mac OS X (10.4.6)
  • CapKapak Level 1 Level 1 (0 points)
    Currently Being Moderated
    May 17, 2006 3:45 AM (in response to CapKapak)
    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)
  • Thinkology Calculating status...
    Currently Being Moderated
    May 17, 2006 3:57 AM (in response to Mardacious)
    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)
  • AT Level 4 Level 4 (1,370 points)
    Currently Being Moderated
    May 17, 2006 4:31 AM (in response to Mardacious)
    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
  • cyberdust Calculating status...
    Currently Being Moderated
    May 17, 2006 4:31 AM (in response to Thinkology)
    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)
  • Thorsten Zoerner Level 1 Level 1 (10 points)
    Currently Being Moderated
    May 17, 2006 4:39 AM (in response to AT)
    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)
  • OSpazX Calculating status...
    Currently Being Moderated
    May 17, 2006 5:03 AM (in response to Mardacious)
    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
  • vamp07 Level 1 Level 1 (0 points)
    Currently Being Moderated
    May 17, 2006 5:04 AM (in response to Mardacious)
    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)
  • hiaw Level 1 Level 1 (0 points)
    Currently Being Moderated
    May 17, 2006 5:38 AM (in response to Mardacious)
    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)
1 2 3 ... 7 Previous Next

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.