Noticeable Speed Difference? 2.8 vs 3.2

Discussion in 'Mac Pro' started by Dawoo, Jul 16, 2012.

  1. Dawoo macrumors newbie

    Jun 2, 2012
    Hi there,
    I am in a bit of a dilemma, there is a refurb 2.8 mac pro available now for £1549 or I can get a brand new 3.2 for £1799. Is the speed difference that noticeable? and is it worth the extra £300 for the speed boost plus the fact that it is brand new?

  2. derbothaus macrumors 601


    Jul 17, 2010
    1000 points in geekbench difference between them. Up to you. I'd do it personally unless I was just getting the 2.8 as a stop gap for a hex replacement.
  3. netkas macrumors 65816

    Oct 2, 2007
    Macpro 3,1 can be overclocked from 2.8 to 3.2 with setfsb utility in windows, then reboot into osx and overclock is still present. Just FYI
  4. davew128, Aug 7, 2012
    Last edited: Aug 7, 2012

    davew128 macrumors newbie

    Jul 27, 2010
    What settings should be used? Every time I try that in Boot Camp the machine freezes and fans go nuts.Found the clock chip at ICS9325421 but it seems the basic clock settings are wrong?

    Says current FSB is 400/800/100.0/33.3 the first slider at 1069/760 and second one at 379/760. Currenty CPU frequency MMT 2793.2.

    What am I missing here?
  5. davew128 macrumors newbie

    Jul 27, 2010
    Ugh. I got it to work but only OCed to 2.845 from 2.8. Anything beyond that and it freezes. It carried over to the Mac side as I could see a very small but measurable boost on benchmarks but thats about it.
  6. steveOooo macrumors 6502a

    Jun 30, 2008
    Probably better to get the 2.8, if you need it faster, replace the 2.8 with a 6core CPU for I think the same £300 (think its around £400) price
  7. softwareguy256 macrumors regular

    Jun 5, 2010
    For most applications, no. The time that general purpose untuned code spends waiting on I/O will more than easily cover up the gains of a lousy 400 mhz difference.

  8. steveOooo macrumors 6502a

    Jun 30, 2008
    I have the 2.8 refurbed with a ssd as the boot - not really any issue amd is super quick - I think the only downer with the whole system is renders within after fx - this down to the ancient ati graphics card ( contemplating sticking a gtx570 )
  9. SteelBlueTJ macrumors 6502

    Apr 2, 2012
    Yea I picked up a 2.8 refurb as well and I'm very happy with it. It replaced my 2007 imac. I decided to go with the refurb 2.8 over the new 3.2 because the price was $500 cheaper and I figured any performance difference wouldnt even be noticeable. I added an ssd for the boot drive and it's blazing fast. Now I havent really done anything intense on it yet, but photoshop cs6 launches in like 3 seconds.

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