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

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

  1. wallny macrumors newbie

    Joined:
    Jul 31, 2011
    #1
    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.

    http://www.anandtech.com/show/4554/apples-11inch-macbook-air-core-i7-18ghz-review-update

    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

    ayeying

    Joined:
    Dec 5, 2007
    Location:
    Yay Area, CA
    #2
    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

    Joined:
    Aug 8, 2011
    Location:
    Land of eternal Spring
    #3
    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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