What does it get with single monitor?

Yesterday I ran the prior version of Heaven and the scores were quite a bit higher.  Looks like the performance is related to what the new version checks and not just the X99 configuration.
 
I have some new memory coming today and will check again, but possibly the benchmark is more tuned to new video cards and the GTX 680s are limited by whatever that is.
 
Thanks.

I see you have both windows 7 & 8.1, are the scores very close to each other when running the tests on both operating systems?

 
The last time I did a serious test, Windows 7 and 8 were pretty close with Windows 7 having a slight edge. 
 
When I get everything stabilized, I will try them again and test back.  Do you have any specific settings you would like for me to use?

Sajin, I can't use the same settings as on the G77 since in is not installed right now.  But there were some differences in the options between Heaven 3 and 4.
 
So the readings for Heaven 4 are below.  The difference between Windows 7 and 8.1 are very small on this X99 motherboard.  The Anti-aliasing seems to have quite some effect, which is how my readings went from the high 800s into the 1100s.
 
Settings,
DX11, Quality high, Tessellation Med, Stereo3D disabled, Multi-Monitor Disabled, Anti-Aliasing Off, Resolution 5960x1080
 
Windows 8.1
FPS 44.0
Score 1108
 
Windows 7
FPS 42.6
Score 1073
 
If I use anti-aliasing of 4x, the score drops by about 200.  A slight increase was seen when using a Resolution of 5760x1080.  Both cards were showing the same clock speed and about the same temps.
 
My tests are just basic and no effort has been made to fine tune the system to increase the results.

Well, I am now officially a little concerned.  I took the 2 GTX 680 and put them on a Z87 motherboard.  Of course, they are running as x8 x8 instead of the x16 x16 on the X99 motherboard.
 
The Z87 score beat the X99 scores, a little.  So again I am wondering if the EVGA motherboard would be better than the ASUS board.  But I have another question first.
 
Is there a chance the technology used in the GTX 680 Classified cards are not able to take advantage of the X99 board technology?  Or might there be a configuration problem for the PCIe slots on the ASUS motherboard and the EVGA board would not exhibit the same bottleneck.
 
I am trying to decide if I should purchase new Video cards, or a different motherboard.  I can't really afford both right now. 
 
I might try to ask the EVGA support folks about this.
 
Thanks

The only other thing I might consider is if the Intel GPU on the Z87 is taking some of the load and increasing its increase in performance.
 
If it isn't that, then I may order a new motherboard after Christmas.
 
I guess I haven't yet mentioned it yet, but changing the configuration to "Maximize 3D Performance" on the Nvidia Control Panel  allowed the system to keep the SLI on while using only one monitor.  The results jumped to FPS 126.7 and a Score of 3192 on the X99, but even higher on the Z87.