Indeed, if you put four cards in, the driver recognises that there are four SLI-compliant cards in the Gigabyte GA-8N-SLI Quad Royal motherboard, but politely asks you to remove two of them.
But then, if you disable the SLI function, this board allows you to run up to eight DVI monitors - just the job for your flight sim.
Then again, if you've got enough cash for four graphics cards and eight monitors, you might be better off buying yourself a private jet.
The rest of the board's features are what you expect to see on a top-flight board these days: an Nvidia SLI Intel Edition chipset, supporting up to 1,066MHz front-side bus (FSB) CPUs, dual Gigabit Lan, integrated 7.1 audio and four Serial ATA 3Gbits/sec ports.
Due to the lack of space, you get just one standard PCI slot. ?