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CPU Haswell Extreme launching Aug 29th!

Discussion in 'Hardware' started by TheGreatSatan, 18 Aug 2014.

  1. faugusztin

    faugusztin I *am* the guy with two left hands

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    Why ? 28 lanes are enough for 3x PCI-E 3.0 x8 and you still have spare lanes for a PCI-E x4 M.2 SSD. Also not everyone buys the CPU for the lanes, many need it for extra 2 cores ;).
     
  2. Fat Tony

    Fat Tony Member

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    I'm going to ask a newby type question - which by it's nature is going to show me up as lazy, technically inept and with more money than sense - but here it comes anyway.

    I want to build an PCIe 3.0 x16 SLI system with an M.2 drive - I'm guessing therefore that the 28 lanes of the 5820 will not be able to fully support this - I'm guessing, that the set up above alone requires 36 lanes.




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  3. damien c

    damien c Mad FPS Gamer

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    The 5820k won't do 16x,16x and iirc it will do 8x,8x for dual cards.

    The 5930k would be the one to go for, if you really want both cards running at 16x.
     
  4. Fat Tony

    Fat Tony Member

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    Swotathought - cheers
     
  5. Elton

    Elton Officially a Whisky Nerd

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    True, but it's why I found the the 5930K to be an oddball. It's more expensive for more lanes, but the 5820K can do 3x 8x PCI-E 3.0.

    It's a smart choice in dividing up the processors, but it kind of sucks that you'd pay $400 for a chip that has less lanes than an i7 920.
     
  6. Fat Tony

    Fat Tony Member

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    And am I right in thinking that most M.2 SSD's - other than the Plextor models designed to be PCIE mounted anyway, are no faster than SATA 3 anyway @c.550 read and write speeds.
     
    Last edited: 9 Sep 2014
  7. faugusztin

    faugusztin I *am* the guy with two left hands

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    You missed Samsung XP941 and yet to be released something from Apacer, but otherwise you are right - everything else uses the SATA3 interface of M.2 module, which is limited to usual 600MB/s.
     
  8. Fat Tony

    Fat Tony Member

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    Aah, right , the M.2 socket is simply a SATA extension, and doesn't make use of PCIe lanes then?


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  9. faugusztin

    faugusztin I *am* the guy with two left hands

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    No. M.2 slot can provide 3 interfaces (doesn't have to support all 3, in most cases it is 1st and 3rd or only 3rd) :
    - SATA3
    - PCI-E x2
    - PCI-E x4.

    Most M.2 drives are SATA3 these days. Few are PCI-E x4. PCI-E x2 is mostly used for M.2 WiFi.
     
  10. Fat Tony

    Fat Tony Member

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    Cheers


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