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NVIDIA nForce 780i SLI
by Marc Prieur
Published on February 8, 2008

Conclusion
Yes, the nForce 780i SLI does allow combining Intel 45nm quad core and SLI, something that wasn’t possible with its predecessor. But actually this is its sole interest because PCI Express 2 support does not offer any significant advantage as long as it is behind that of Intel’s X38.
This isn’t the only area where the X38 is superior. It also shows better performances whether related to the memory interface, RAID 0/5 in multiple simultaneous access or in RAID 5 in writing, even if it remains relatively low. In addition, the X38 proves to be significantly more at ease at managing its 4 DIMM slots at high frequencies. Finally, it’s slightly better in terms of FSB increases while at the same time consuming less than the nForce 7. The presence of a 3rd chip doesn’t help the nForce here.


In addition to SLI, we have to give the nForce 7 credit for its low processor use in Gigabit network transfers although this doesn’t weigh too heavily in the era of quad core CPUs. In the end, the nForce 780i SLI, which is more of an nForce 690i SLI, is therefore somewhat disappointing and limited to those impatient users looking to combine a Yorkfield and SLI.
If this type of configuration interests you, we recommend waiting a few weeks for the arrival of the nForce 790i SLI, which should according to the latest rumors be equipped with a new SPP that has native FSB1600, PCI-E 2.0 and DDR3 support. Given the high price for this type of memory, we hope its management will not be exclusive and that in practice DDR2 will also be supported.

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