Last week, Nvidia payed us a visit with a 680i and a triple-SLI configuration with 3 Ultras (see this thread for benchmarks and information: http://www.xtremesystems.org/forums/....php?t=169204). Luckily we received a 780i board to do our own testing. The EVGA board used is based on the reference Nvidia design.
The features of the board are pretty much equal to the 680i specs, with one exception: 780i has 3 PCI-E-x16 lanes, both physical and electronical. For whatever reason only 2 of the slots are PCI-E 2.0, the third slot is only a 1.1.
In January there will be a 750i out, featuring 2 PCI-E-x16 slots with 8 lanes each and PCI-E 2.0, as well as variants for AMD platforms.
Now to the testing:
We used the following setup:
Intel Core 2 Extreme QX6850
2,048 MiByte PC8500 5-5-5-15
3 Nvidia Geforce GTX
Be Quiet Dark Power 1000W
Windows Vista 32 Bit
You may ask, why Vista? Because triple-SLI only works with Vista so far.
Games we tested:
Call of Duty 4
Unreal Tournament 3
Both games in 1,680x1,050, 4x FSAA/16:1 AF and 2,560x1,600, 4x FSAA/16:1 AF.
I am trying to do some 3D Mark benching right now, but from what I noticed, 780i is no different from 680i. It takes some time to get everything up and running. A lot of fans are needed too, in order to run the system for more than half an hour without freezing.
Link to the picture galerie: http://www.pcgameshardware.de/?menu=...mage_id=749126
Direct link to the benchmark results: http://www.pcgameshardware.de/?menu=...&show=original
(Click into the picture to enlarge it, "nächstes Bild" means next picture)