Any difference at all: 8Gig and 4Gig chips

Discussion in 'Mac Pro' started by IceMacMac, Mar 5, 2011.

  1. IceMacMac macrumors 6502

    Joined:
    Jun 6, 2010
    #1
    Are there any real-world differences in say... 8 of the 4 GIG chips...versus 4 of the 8 GIG Chips...in MacPros 2009 and later?

    Obviously the price per gig is not as good...but I'm talking about performance, known gotchas...that kind of thing.

    Just looking for some re-assurance here. Sometimes there are peculiar things that show up with certain pairings, slots, etc.
     
  2. goMac macrumors 603

    Joined:
    Apr 15, 2004
    #2
    Usually having more chips will show some speed improvements, so in this case the 8 4 gig chips would be slightly faster.

    Makes it harder to upgrade in the future, though.
     
  3. Umbongo macrumors 601

    Umbongo

    Joined:
    Sep 14, 2006
    Location:
    England
    #3
    Nothing of significance. 8GB DIMMs are almost certainly going to be registered memory rather than unbuffered which is less than 1% slower when you use less than 4 per CPU and 8% or so faster when you have 4 per CPU, but you can get 4GB registered DIMMs too. You won't notice this in real world performance.
     
  4. IceMacMac thread starter macrumors 6502

    Joined:
    Jun 6, 2010
    #4
    GoMac, Umbongo

    Thanks guys. I think I'm going to get 48 GIGs--6 of the 8. After Effects wants 2-3 Gig of RAM per CPU/Thread, plus lots of overhead...and that's my every-day application.

    Any parting thoughts about using 6 of 8 slots...with 8?
     
  5. MattDSLR macrumors 6502

    Joined:
    Jan 23, 2011
    Location:
    Canada
    #5
    if you have the cash go with 8 gigs
    you will not be sorry :)
     

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