800 Mhz ram in Mac Pro 1,1

Discussion in 'Mac Pro' started by dlewis23, Nov 8, 2009.

  1. macrumors 6502a

    Oct 23, 2007
    Was wondering if anyone has tried putting 800 Mhz DDR2 ram into a Mac Pro 1,1. Only reason I'm thinking of doing this is because 800 Mhz ram is quite a bit cheaper at the moment over 667.

    I know that it will clock it self down and all, done that many times before, I just wanted to make sure that there will be no problems (Since these mac pro's seem to be a bit picky on some things), just so I dont waste my time ordering this.

  2. macrumors member


    Jan 8, 2007
    Austin, TX
    Yes, I've done it... I needed extra RAM in my 1st gen machine, but knew I was going to be moving up to a 2008 model in the next year or so, so I bought the 800mhz memory, since it was the same price. It worked fine, and when I bought the new machine, I just transferred it over. Never had any issues...

    I do recommend buying from a quality vendor though... I get mine from OWC.

  3. macrumors newbie

    Jul 15, 2009
    Same here, works no problem. I even have mixed RAM from different vendors and speeds (667 and 800) and it all adjusts to the 667 speed.
  4. macrumors 68000

    Aug 30, 2006
    New England
    Great! I think I'll jump in on this deal at newegg and get my MP 1,1 from 12 to 16 GB for under $200. I already have four 2GB Transcends sticks in my MP and they have worked flawlessly.
  5. macrumors 65816

    Aug 1, 2007

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