HELP HELP HELP ! PLEASE READ!

lionelmessi

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Nov 6, 2012
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Guys ok, The EVGA GTX 660, 28nm, Says this next to it ---> PCIe 3.0 (x16) <---- Will my gigabyte ga z77x up5th support two of these at x16 speed...


MY MOBO -------->http://www.gigabyte.com/products/product-page.aspx?pid=4279

 
G

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As far as I am aware, no motherboard can do SLI or Crossfire with BOTH cards running at x16. The highest is 16x for slot 1 and then 8x for slot two.

1 x PCI Express x16 slot, running at x16 (PCIEX16)
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.

1 x PCI Express x16 slot, running at x8 (PCIEX8)
* The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x8 mode.
 

darksparten

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Nov 30, 2012
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There's a lot of boards that can do 2 cards at x16/x16, there aren't a lot of boards that can do 3 or 4 cards at x16/x16/x16/x16, but for 2 cards there's a lot.

Maximus V Extreme
Rampage IV Extreme
G1.Sniper
ASRock Extreme9
X79 Champion

There's even one that can do 4 at x16, the ASRock X79 Extreme11.
 
your mainboard will support 2 way sli in x8 mode...but you don't need to worry atall...you will face no bottleneck from that part.

only those mainboard fitted with a Marvell chip or something around those lines that allows active switching of pci e lanes can achieve x16 bandwidth on both cards

asus rog mainboards have those chips
 

lionelmessi

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Nov 6, 2012
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Oh ok ;) guys guess what ... I haven't got that mobo yet , in offering tonight ..? Is the gigabyte up5 th , the best z77 mobo ? I don't like the others... Give me you're adive ...? You guys are just much more cleaver at this