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will i see a differences between lanes in the motherboard 2.0 pci x16

i was thinking of crossfire and sli in a motherboard should I save up for a motherboard with x16 and x8/x16 lane or should I buy a cheaper one with x16 and x4 lane for using two 650 ti boost???
in other words would I see a differences in using a motherboard with x16 and x18/x16 or lanes x16 and x4??? cross fire/sli 650 ti boost.
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More about differences lanes motherboard pci x16
  1. If they even work that way... YES!
    That lanes are used for information transfer and logicaly 16x is 4 times more than 4x.
    So one card will go full speed and one only quarter speed... IF THEY WORK THAT WAY... you just wasted money on that second card.
  2. the guy above me has no idea what he is talking about. 16x represents the fastest connection available. that doesnt mean that a graphics card can utilize all of it. x8 maximum bandwidth that can be fully utilized by the fastest gpus like the 780 ti. x4 will be more than sufficient for a 650 ti boost. but the x16 and x8 is better because the x4 takes lanes away from the platform controller hub
  3. thanks!
    so would you think this motherboard is a good ne for using two 650 ti boosts??
    http://uk.pcpartpicker.com/part/asrock-motherboard-990fxextreme3
  4. Best answer
    yes that will be fine. you should consider getting a single gtx 770 instead. less power less heat slightly better performance. you can add another card inthe future. there will be no problems with apps that dont support sli and its just simpler
  5. airplanegeek said:
    the guy above me has no idea what he is talking about. 16x represents the fastest connection available. that doesnt mean that a graphics card can utilize all of it. x8 maximum bandwidth that can be fully utilized by the fastest gpus like the 780 ti. x4 will be more than sufficient for a 650 ti boost. but the x16 and x8 is better because the x4 takes lanes away from the platform controller hub


    Anyway... as pci-express wiki stands: "PCIe 3.0's 8 GT/s bit rate effectively delivers 985 MB/s per lane, double PCIe 2.0 bandwidth."
    Geforce 660TI Boost need PCI-Express 3.0 and 144.6 GB/s to fully utilize it`s power (and i think in games at high res and with details at max it will)...
    DO YOUR MATH! But I don`t think he get 2 cards to play just solitaire... but as you said what do i know?
  6. _Cosmin_ said:
    airplanegeek said:
    the guy above me has no idea what he is talking about. 16x represents the fastest connection available. that doesnt mean that a graphics card can utilize all of it. x8 maximum bandwidth that can be fully utilized by the fastest gpus like the 780 ti. x4 will be more than sufficient for a 650 ti boost. but the x16 and x8 is better because the x4 takes lanes away from the platform controller hub


    Anyway... as pci-express wiki stands: "PCIe 3.0's 8 GT/s bit rate effectively delivers 985 MB/s per lane, double PCIe 2.0 bandwidth."
    Geforce 660TI Boost need PCI-Express 3.0 and 144.6 GB/s to fully utilize it`s power (and i think in games at high res and with details at max it will)...
    DO YOUR MATH! But I don`t think he get 2 cards to play just solitaire... but as you said what do i know?


    dual gpu card scaling isnt quite perfect and you can check the different tests by people like linus who show that the difference between x16 and x8 is nonexistent
  7. thanks!!
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