Can anyone confirm that there is any benefit in running dual GPU (SLI) in Rebellion.  I know it is not developed specifically to take advantage of this, but I wondered if it has any effect at all.

Rebellion is about the only thing I play lately, and I am considering getting a matching card for my current. However if there is little gain I will not rush out to get one right away as the price will half in just months I'm sure. But if Sins gets a visual boost I'd fork out now.

I have a single GTX550ti which at 1440 x 900 plays with everything at highest very well until HUGE fleet battles. But I just bought a new monitor with higher resolutions. However when increasing the resolution in game to match the game is definitely suffering. If a 2nd card can recover this I'm sold!

Does anyone run SLI and can they confirm performance improvement over running on one card?

Cheers!