Memory Question: 3GB vs. 4GB

Discussion in 'iMac' started by js81, Mar 26, 2009.

  1. js81 macrumors 65816

    js81

    Joined:
    Dec 31, 2008
    Location:
    KY
    #1
    OK, so I found a great deal and am buying a white iMac. Its a C2D 17" and comes with 2GB RAM. Needless to say, I want more RAM. :) This model supports 4GB but only utilizes 3.XGB. Here's my question; which should I buy?

    (Both are 667MHz DDR2 and from Newegg, and I like both brands :))

    4GB Corsair ValueSelect (2x2GB) with 5-5-5-15 timings for $37.99
    -OR-
    3GB Kingston HyperX (2+1GB) with 4-4-4-12 timings for $36.99.

    Basically my question is which will perform better a slower matched pair or a faster unmatched?

    Thanks for the advice!

    EDIT: The iMac has the Radeon X1600 video card, NOT the integrated Intel.
     
  2. aprofetto macrumors 6502a

    aprofetto

    Joined:
    Dec 19, 2008
    Location:
    Hamilton, Ontario
  3. Mike in Kansas macrumors 6502a

    Mike in Kansas

    Joined:
    Sep 2, 2008
    Location:
    Metro Kansas City
    #3
    Based on what I have read, you get a speed bump in having a matched pair even though it doesn't utilize all 4GB.

    Regarding the 5-5-5-15 vs. the 4-4-4-12 though, I haven't seen anything comparing the two.

    Can you get two 2GB sticks of the 4-4-4-12 for the ultimate?
     
  4. js81 thread starter macrumors 65816

    js81

    Joined:
    Dec 31, 2008
    Location:
    KY
    #4
    Just checked and found the Kingston HyperX 4GB kit on Newegg for $42.50. Guess that just made my decision easier, huh? I must have overlooked it the first time. :rolleyes:
     
  5. Mike in Kansas macrumors 6502a

    Mike in Kansas

    Joined:
    Sep 2, 2008
    Location:
    Metro Kansas City
    #5
    Problem solved!

    Could also check OWC too (www.otherworldcomputing.com)
     
  6. js81 thread starter macrumors 65816

    js81

    Joined:
    Dec 31, 2008
    Location:
    KY
    #6
    I've used OWC in the past with my older Macs (particularly a SuperDrive for an old PowerMac). I haven't checked their memory prices. **opens a new tab to check** :)
     
  7. michael.lauden macrumors 68020

    michael.lauden

    Joined:
    Dec 25, 2008
    #7
    would you rather run your car for an hour at at 10,000RPM or 7,500 RPM?

    4GB would probably be best. it's not that much more expensive so i don't see the debate
     
  8. js81 thread starter macrumors 65816

    js81

    Joined:
    Dec 31, 2008
    Location:
    KY
    #8
    CAS 4 is faster than CAS 5, yeah - but my question was whether it would be faster than a matched pair. Now that I found the matched pair of CAS 4 for a similar price, there is no debate. I'm going to get the 4GB CAS 4 kit (HyperX).
     

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