geekbench no difference between 4 and 8 GB Ram?

Discussion in 'iMac' started by Seraph301083, Dec 5, 2009.

  1. Seraph301083 macrumors member

    Nov 8, 2009
    I just upgraded my iMac i7 to 8GB Ram and ran geekbench again but there was no difference to the prior 4GB setup.. even in 64bit it doesn't make a difference.

    does anyone know if it is normal or is there something wrong with my Ram?

    the pics show the results

    32bit 4GB -> 8396
    64bit 4GB -> 9649
    32bit 8GB -> 8386
    64bit 8GB -> 9605

    Attached Files:

  2. jonwd7 macrumors member

    Nov 19, 2009
    Geekbench does nothing to score based on RAM capacity, just the memory bandwidth and to a certain extent RAM timings (CL7 vs CL9). You will however see vast improvements if you use a lot of fairly intensive programs, especially in multitasking situations. I had 8GB in my old Power Mac before this and I was frequently Using/Caching most of it.

    However in my experience of upgrading to 1333MHz RAM, the bandwidth-dependent tests went up by about 25% under both 32-bit and 64-bit, although the overall memory score increased only slightly because the other tests did about the same or worse. I also doubled the RAM in the process, but I know that the increase in RAM had nothing to do with the better scores. I never tested the difference between 4GB and 8GB myself.

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