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Bloomfield with multi GPU faster than Yorkfield
Continuation: Intel Core i7 with 3-way SLI and Quad-Crossfire reviewed


Asus Rampage II Extreme
 
Asus Rampage II Extreme [Source: view picture gallery]
Core i7 with 3-way SLI/Quad-Crossfire: X58 compared
For Nehalem there currently is only one chipset: Intel's X58. In contrast to prior chipsets it supports AMD's CrossfireX as well as Nvidia's SLI. In order to utilize the latter technology the motherboards have to be approved by Nvidia. Furthermore board partners can install the NF200-SLI chip on their products, which enables more lanes for the graphics cards.

When using one or two cards, Intel's X58 offers 16 lanes with PCI-E 2.0 bandwidth for each one. If three cards are used, there are only 16 lanes and two times 8 lanes available. Combining the X58 with the NF200-SLI results in three times 16 lanes - like Nvidia's Nforce 790i Ultra SLI. Since we didn't have a X58 board with an NF200-SLI chip available for our tests we had to use a board without the additional chip. The QX9770 on the other hand was running on an Nforce 790i Ultra SLI board and thus 3-way SLI could access a higher bandwidth - an advantage.

Chipset Intel X58 plus NF200-SLI Intel X58 Intel X48 Nforce 790i Ultra SLI
Lanes with one card 16x 16x 16x 16x
Lanes with two cards 16x 8x 16x 16x
Lanes with three cards 16x 8x no slot or 4x 16x





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Author: Marc Sauter (Nov 07, 2008)


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Comments (2)

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Ar.Pi Re: Intel Core i7 with 3-way SLI and Quad-Crossfire reviewed
Senior Member
13.11.2008 05:54
If Lucid's Hydra 100 actually will work the way they say it works then its going to change a lot.

You will be able to buy 2 low-mid range card and improve performance X2. That would be insane
I wonder what this would mean for high end GPU's, they'll have to make unique features other than performance benefit to draw the crowd...

I have doubt it works "as advertised" though.

On topic: great scale for i7. Need only to drop prices on these and i'm sold.
lagathy Re: Intel Core i7 with 3-way SLI and Quad-Crossfir...
Senior Member
10.11.2008 20:52
Another interesting article...for me,the benefits of tri-sli really seem to be very slim,but this is pretty much common knowledge,and the only games which should theoretically benefit from 3 280's,such as crysis 1 and 2 are such monstrous hardware hogs(you really have to wonder when,with a ludicrously powerful setup consisting of the fastest cpu currently available and 3 of the fastest single gpu card solutions currently available in cohort,you are plumming the absolute depths of fps at maximum resolution,with only 2x fsaa and dx9) that you're simply better off waiting for a couple of yrs if you wish to be able to even attempt to max them out.
im still pinning my hopes on Lucid's hydra 100 though lol.

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