Snow Leopard + 3870 = Slow?

Discussion in 'Mac Pro' started by ventro, Aug 29, 2009.

  1. ventro macrumors 6502a

    Sep 23, 2006
    I'm experiencing some massive graphical slowdowns after upgrading to Snow Leopard.

    - Expose is REALLY choppy. Sometimes I only see like 1-5 frames of the animation.
    - Quicklook is also quite choppy.

    I'm wondering, maybe SL overwrote the drivers that came with the 3870 on the CD? Should I re-install the drivers off of the CD? Any ideas?
  2. JPamplin macrumors 6502


    Mar 12, 2009
    Nashville, TN
    OK, I've got a 1,1 and a 3870. I did a clean install of SL then did a Time Machine restore of my 10.5.8 setup. ATI drivers should be later than 10.5.x - try that.

    I'm not experiencing massive slowdowns, but benchs are lower than 10.5.8. Not that much, though.

  3. DonMega macrumors regular

    Jul 8, 2007
    Yes, I'm having the same problem. COD4 is dog slow as well. Slow as in 10-15 fps when I was getting 70-80 fps before.
  4. ventro thread starter macrumors 6502a

    Sep 23, 2006
    The slowdowns aren't everywhere, for example opening up a grid-view stack is very fluid and faster than Leopard. But Expose and Quicklook are two areas where the performance is quite choppy. This is at 2560x1600, btw.
  5. rnb2 macrumors regular

    Jan 23, 2006
    West Haven, CT, USA
    I have a Mac Pro 1,1 2GHz/3870, running two monitors (Cinema 23" and Samsung 215TW), and I'm not seeing any performance issues in Expose or QL at this point. How many windows are you dealing with in Expose? How much RAM do you have?
  6. ventro thread starter macrumors 6502a

    Sep 23, 2006
    Happens with 2 or more windows. I have 10GB of ram.
  7. TheStrudel macrumors 65816


    Jan 5, 2008
    Ventro, did you do a clean install or upgrade? Just curious.
  8. rnb2 macrumors regular

    Jan 23, 2006
    West Haven, CT, USA
    I tried Expose with three Finder windows (I have 9GB of RAM), and have no issues. I did an upgrade install of Snow Leopard, though I did have to boot off the DVD to get the install to work (had to do the same on two other machines - only my unibody MacBook worked via running the installer from within Leopard).

    Don't know what to tell you beyond that - the only thing I've noticed is that the fan on my 3870 is running faster under typical load than in Leopard, but the performance is fine thus far.
  9. ventro thread starter macrumors 6502a

    Sep 23, 2006
  10. TheStrudel macrumors 65816


    Jan 5, 2008
    I've heard that some peoples' upgrades are going smoothly, and others aren't. Could be an install/stuff you had in your system issue for all we know at this point. The fact that there's no pattern to it yet is a bit worrisome.

    Might be worth trying a clean install on another drive or partition? Just in case?
  11. DonMega macrumors regular

    Jul 8, 2007
    RE: Snow Leopard + 3870 = Slow?

    I've been experimenting with my Mac Pro 1,1 this morning and I can't figure out why COD4 has slowed down. I have 16GB of RAM and a 3870 in my box and after a couple of reboots, I'm not really seeing the sluggishness in exposé and dashboard, or even Aperture which is my main work environment on this box. But COD4 gets really slow when there is a lot of action/players involved in a small area/scenario, i.e., "Killhouse". I guess this isn't a big deal as I could just quit playing (Yeah right! COD4 is like crack to me! :eek:), but it does bug me a little. What say you all?
  12. ventro thread starter macrumors 6502a

    Sep 23, 2006
    Very strange, more than 48 hours later, and Expose and Quicklook are suddenly extremely smooth! I don't know how long this will last, but I'll take it :)

    It's quite weird, it just fixed itself. I didn't even restart or anything.
  13. mc123 macrumors newbie

    Sep 1, 2009
    My Mac Pro (v1.1) has a 3870 which I installed about a year ago. It always worked well under Leopard - fan was reasonably quiet except when under load (playing video or a game).

    Upon upgrading to Snow Leopard (not a clean install), my 3870 fan is running full speed at all times. Apple Tech Support is at a loss on this one.

    Aside from the fans running, I don't see any major system/graphics slow-downs.

    Anyone else experiencing the fan issue?
  14. Herbert macrumors newbie

    Sep 1, 2009
    richmond, va
    Mac Pro 1, 1 8gbs ram, 3870

    seems to be working fine on this machine... I don't have COD 4 but I do have blender installed and a 5000 faced model seemed smooth during rotation.
  15. mc123 macrumors newbie

    Sep 1, 2009
    Herbert, did you do a clean install or upgrade to Snow Leopard?
  16. btollenaar macrumors newbie

    May 26, 2006

    anyone interested in my 3870 - lookin' to move to the 4870...
  17. stinand macrumors newbie

    Sep 2, 2009

    Yes I'm getting my IO fan at 2138 about 100O RPM to many. Tried an SMC reset. Went back to leopard on a back up all cool there:) I'm on a Quad 2.8 mac pro
  18. Skorpion24 macrumors 6502


    Jan 28, 2009
    I've the same problem with my iMac (120GT), but with spaces, I've upgraded and re-formatted the HD but the problem remains...
  19. cftagger macrumors newbie

    Sep 4, 2009
    I have the same 3870 fan issues as mc123; MacPro1,3 here. When I boot the machine with 10.5.8, everything is fine; but with SL, the fan is always on...
  20. babyCreative macrumors newbie

    Sep 5, 2009
    I'm experiencing the exact SAME problem!

    24" iMac october 2007 - 4GB RAM - set up along a 24" Dell WFP panel
    Snow Leopard (upgrade, not a clean install)

    No clue what might be wrong. When asking online (in game), other people are experiencing the same problems...
  21. jazz1 macrumors 65816


    Aug 19, 2002
    Mid-West USA
    3870 = Better Now

    I'm not sure what fixed my problem with Hulu streaming but after trying several things I've getting less choppiness in a full-size pop-out screen in Hulu. It also works better with TheWBCom. Oddly I was getting great Speednet speed tests even while I was having the problem. Full-Screen, not pop-out streaming never gave me issues. QT HD streaming never gave me issues. Just Hulu and TheWBCom.

    What did I do?

    1. Clean install.

    2. Quit Using OpenDNS and reverted to the Mediacom server.

    3. Used Airport Utility to up the Multi-Cast rate full on (reduces range).

    4. Dumb luck?

    I don't know what finally fixed this. Maybe the multi-cast rate or SL worked out some kinks. I've had this happen before with other upgrades.

    I really need to abandon Wifi and go ethernet I think.

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