ymicz
I'm really loving this 980ti Classy... 
http://www.3dmark.com/fs/5366825
How much??? 1315 base clock.
Your result is as GTX780Ti Classified SLI.
If you have two BIOS I would look 1250MHz, for gaming and jump as little child.
Such card I would even maybe install waterblock for her not to save more for TITAN X SC.
You really have luck and with CPU and with graphic cards, mostly what I saw on net 5820k go up to 4.3GHz... your is on 4.7GHz.
I will keep mine on 4.0GHz for gaming.
Do you understand, result of GTX780Ti Classified is about 12.500, your score is 22.000.
But scaling in SLI is not 100%/25.000, always less than that....