What voltage RMA can the new MacPro use?

Discussion in 'Mac Pro' started by SolidGun, Jun 19, 2009.

  1. SolidGun macrumors 6502


    Jul 24, 2004
    Twin Cities
    I am thinking of purchasing RAM that lists 1.9V. Just curious as I do not know the spec for Mac Pro.

    Any input would help. Thank you.
  2. Tallest Skil macrumors P6

    Tallest Skil

    Aug 13, 2006
    1 Geostationary Tower Plaza
    Just by from Crucial or OWC only. It's safer, as you know the RAM works.
  3. nanofrog macrumors G4

    May 6, 2008
    1.5V in the '09' MP's or any other Nehalem based system. :)

    Skip the 1.9V parts.
  4. Gonk42 macrumors 6502

    Jan 16, 2008
    near Cambridge
    The memory controllers in the Nahalem Xeons in the Mac Pro are potentially damaged by high voltages (above about 1.65V I think). I presume that the Mac Pro wouldn't apply the higher voltage but I wouldn't risk it. Stick with 1.5V.
  5. nanofrog macrumors G4

    May 6, 2008
    The Voltage Regs would give 1.5V, and the memory can take 1.65V without damage. Using the 1.9V variety wouldn't burn up anything, it just wouldn't work, as it's not getting enough power.

    If it were getting 1.9V though, it's output would damage the Integrated Memory Controller on the CPU. :eek: Either way, you wouldn't want to use it. ;) :p

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