Because i want to buy a Sli motherboard and I don't know witch one to choose.Curently I own a 8800 GTS 512 and I plan to buy another one .I heard that the 780i has a higher bandwidth than the 750i when running in SLi.
Watch out Intel - NVIDIA's just broken out the big guns and this time they're not holding anything back. Coming out firing with both barrels blazing, the nForce 790i (Ultra) SLI promises to provide users with the ultimate platform for high-intensity, adrenaline-pounding gaming when it comes to combining NVIDIA multi-GPU 3D graphics and the power of today's most advanced Intel desktop microprocessors. Probably sounds a little over the top, but this time we reckon an nForce chipset for the Intel platform will live up to the hype.
Our experience with 790i thus far has been overwhelmingly positive. It's clear to us that NVIDIA's decision to take the extra time needed to fully prepare the board and BIOS for retail release will end up paying dividends in the end. Many of the problems we experienced with early 780i boards are thankfully missing. The effort placed in providing good Auto values for overclocking has also been extremely helpful. Gamers that are looking to buy a system that is capable of practically overclocking itself should seriously consider the nForce 790i.
Current 780i-based motherboard owners should note with approval the absence of the nForce 200 sub-processor from this line-up as the functionality (PCIe 2.0) formerly provided by this chip is now natively supported by the improved 790i SPP.
One of the major changes over the 780i SLI MCP is the integration of NVIDIA's newly-designed DDR3 memory controller capable of addressing up to 8GB of unregistered, non-ECC DDR3 memory. Add to this the incorporation of complete PCI Express (PCIe) 2.0 bus support and we can see that 790i is more than just a simple upgrade from 780i. Those looking to swap their current board for one featuring the 790i should find more than enough reason to consider the change.
Our experience with 790i thus far has been overwhelmingly positive. It's clear to us that NVIDIA's decision to take the extra time needed to fully prepare the board and BIOS for retail release will end up paying dividends in the end. Many of the problems we experienced with early 780i boards are thankfully missing.
This is first enthusiast level chipset from NVIDIA for the Intel platform that we refuse to refer to as a duck in the labs. You see, just like a duck, the 680i/780i based motherboards seem to wake up in a different world every day. All indications at this point are that NVIDIA finally got their act completely together with the 790i.