will snow leopard really make that much diff. on a mid 2007 iMac?

Discussion in 'macOS' started by brendu, Jun 16, 2009.

  1. brendu macrumors 68020

    Apr 23, 2009
    so i have a mid 2007 (original aluminum imac) 20" and i believe the video card is the ati hd2600 not positive on that ill check when i get home. i read on another thread that open cl will not be supported on this model. what does this mean for me, and aside from that how different will my end user experience change with the upgrade? I mostly web browse, listen to lots of music, and watch lots of hulu.
  2. FSMBP macrumors 68020


    Jan 22, 2009
    Complete deja vu. I think this identical thread was already made.

    But to save time, your iMac will completely benefit from Snow Leopard. It will run faster and more efficient. The video card thing is just one feature - there is a lot more.
  3. brendu thread starter macrumors 68020

    Apr 23, 2009
    ok cool.. still wondering what im going to be missing out on with the whole no open-cl support... will this primarily affect gaming?
  4. TheSpaz macrumors 604


    Jun 20, 2005
    Nope... won't affect gaming at all.

    Open-CL means that the GPU (graphics processor) can be used for more than just graphic rendering... Instead of using the GPU to just display video or make games run faster, it will also be able to process other information as an additional processor.
  5. brendu thread starter macrumors 68020

    Apr 23, 2009
    thank you so much for giving a clear, short explanation of open cl. been waiting for that for months. So then SL is a definate for me and my trusty iMac, thanks guys
  6. Morod macrumors 68000


    Jan 1, 2008
    On The Nickel, over there....

    I've got a mid-2007 24" Al iMac. SL will be on it as soon as it comes out, Open-CL be damned. BTW, my GPU is an ATI Radeon HD2600 as well.
  7. MikhailT macrumors 601

    Nov 12, 2007
    Just don't set your expectations too high. It won't instantly be more responsive than the current Leopard in system performance or speed. The majority of the speed comes in applications that'll benefit greatly from GDC/OpenCL, like Mail, iMovie and so on. Finder may not be any faster than Leopard's Finder in typical usage.
  8. vansouza macrumors 68000


    Mar 28, 2006
    West Plains, MO USA Earth
    As of this date, and unless and until SL is updated; your iMac and mine will not run in 64bit mode. SL runs plenty fast in 32bit mode.
  9. ACiB708 macrumors regular

    Apr 6, 2008
    NOT true at all, Finder in Snow Leopard has been rewritten from the ground up, see in Leopard it is Carbon and in Snow Leopard it is Cocoa, and it runs way faster, snappier, and better overall. Also much of the main applications are now 64 bit. So, to the thread starter, yes you will see a good speed bump when using SL. I'm testing the WWDC build and it is very good and fast. Shame that the dock/exposé feature isn't here yet :(
  10. Pooshka macrumors 65816

    Jun 28, 2008
    I'm on the very first and original MacBook Pro (March 2006). I'm running Snow Leopard, and I see quite a bit of a speed increase (not a lot though).
  11. MikhailT macrumors 601

    Nov 12, 2007
    I am running the WWDC build here as well.

    It is not noticeably WAY faster than Leopard in daily use and I abused it a lot especially with external and network drives, it's just a tiny bit more stable and responsive but it is definitely not way faster than Leopard's Finder. We're talking less than 10% better performance than what people are assuming with 50% or more.

    Now my experience may be different for majority of people with HDs because I have an SSD in my system, so it is possible that Finder is actually much more responsive and faster on hard drives but actually it may not have a big difference on SSDs.

    Thus the wording in my previous post was "may not be faster" which is not the same as not "definitely won't be faster".

    Also my WWDC build is only running in 32bit, 64bit mode of SL refused to run on my early 08' MBP 17" which is definitely 64bit at 2.5Ghz Penyrn. I bet the majority of people is not running it in 64bit mode either.

    BTW rewriting an application from Carbon to Cocoa doesn't necessary means that it'll be faster, more responsive and better overall. A bad code is bad code regardless of what API it uses. In this case, Apple probably didn't just simply just convert it from Carbon to Cocoa, they also refactored and optimize the code to take advantage of GDC in the most efficient ways.
  12. Matek macrumors 6502a

    Jun 6, 2007
    I'm with MikhailT on this one. Rewriting apps in Cocoa doesn't necessarily mean it's much faster. It's better code, sure, and it will be easier to maintain and further develop in the future. Similar situation with 32 bit -> 64 bit, it doesn't warrant any speed improvements by default.

    I'm not saying it's a bad thing, it's just that people too often get pulled into the marketing way of thinking "Ooooh, 64 is twice as much as 32, this must be really good".
  13. Catfish_Man macrumors 68030


    Sep 13, 2001
    Portland, OR
    Actually this one really is useful. Between extra registers, the 64-bit only modern objc runtime, and a few other things, I get a 20% speedup for 64 bit AutoHyperlinks.

    It's not "twice as fast 'cause 2x as much data" or any of the nonsense that gets spread about it though.
  14. Matek macrumors 6502a

    Jun 6, 2007
    I understand that there is a lot of potential, I'm just trying to say a switch to 64bit doesn't bring anything by itself, it all depends on the software. Some things might get a huge boost, others might not gain anything at all.
  15. TPMann GB macrumors member

    Mar 29, 2008
    South West England
    I have similar machine- hold down "6" and "4" when booting to start with 64bit kernel etc.
  16. MikhailT macrumors 601

    Nov 12, 2007
    Holding down 64 bricked the system. It won't boot the 64bit at all. I thought 32bit would work but nothing. I had to totally reinstall SL just to get it working again.
  17. norbiu macrumors member

    Aug 23, 2007
    What about a 2006 Intel Core Duo MacBook? Should I wait and buy SL or get a new system when SL comes out?
  18. Eraserhead macrumors G4


    Nov 3, 2005
    Snow Leopard is $29, a new Mac is $1000 - you decide.
  19. SomeSwede macrumors member

    Feb 26, 2009
    Land of ice and snow.
    I got a 2007 iMac and the WWDC version of Snowie is noticeably faster on my machine.
  20. zweigand macrumors 6502a


    Oct 19, 2003
    I'm guessing that is why it won't be out until September.

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