VT-d missing on 1.6G Core i5 (11" MBAir)

Discussion in 'MacBook Air' started by wallny, Aug 11, 2011.

  1. wallny macrumors newbie

    Jul 31, 2011
    This Anandtech post says that the 1.6g cpu from 11" Air doesn't have VT-d technology, which can be found on 1.7g i5 or 1.8g i7.


    I've googled "VT-d" but those tech terms seem too obscure to me.

    What's the real benefit in Parallels Desktop? I do a lot of Windows stuff on PD, is the performance gain (if any) from VT-d noticeable?

    I just bought my $1199 11" air a few days ago. Is it worth the hassle to return and re-order a customized one with the 1.8G core i7 cpu, just for the VT-d?
  2. ayeying macrumors 601


    Dec 5, 2007
    Yay Area, CA
    You won't be able to use VT-d stuff anyways. The only advantage for VT-d are for workstations with multiple processors and multiple graphics for direct I/O.

    Parallels uses a virtualization, which is VT-x supported.
  3. jsolares macrumors 6502a

    Aug 8, 2011
    Land of eternal Spring
    VT-d is an implementation of IOMMU there is no performance gain in virtualization unless you need it (imagine a pci-e card, and having the virtualized OS direct access to it)

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