Try using the built-in OS X drivers instead of the Nvidia web drivers.
Just tried. Still the same avg results
After reading your 1st post again, I realized that you are booting 2 different OSX installs with the same result. This seems to indicate a hardware problem. It could also be a configuration issue. Put the card in the other 16x lot and see if that helps.
I have 3 HDs + one SSD. One HD has SL 10.6.8, the SSD has ML 10.8.5.
I can boot using both and on both I see slowdowns.
I'm gonna check the other 16x and see
I'm running dual 680's and for sure my boot time increased. It also increased when I added more ram. But once boot is complete and I'm up and running the performance is insane. Your GPU should have no bearing on your Geekbench score. When diagnosing these performance issues it's best to strip your machine to the basics. If you have a spare drive put a clean install of OS X on it and boot from it. Strip the ram to one stick, pull all unnecessary pci-e cards, unplug all peripherals. Then do some testing/benching while re-installing the items one at a time.
Running dual flashed 680's on Mavericks this is my current Geekbench...
I know the GPU is not involved in the Geekbench, that's why i can't understand what it could be. I'm gonna take the mac back to the basic configuration to see the changing of the benchs when adding everything i added
Just checking, have you got the 2x6 pin power connectors plugged in? Something about the way you worded that made me wonder?
I'm using both the 6 pin connectors on the mac's MoBo, one of them with an adapter cable.
Also, isn't the 680 SC 1x6 and 1x8 pin? How are you powering it?
I'm using a 6 to 8 adapter for one of the cables. Unluckily 5.25" psus like the FPS X5 are not easy to find here in EU, so I'm using the mac pro psu.
You have a few things to check
Power connecters
Is this the only vid card in the machine? If not, remove the other. Try the 2nd slot for 16x. Also try a lesser bus slot.
Appropriate drivers (Mac's vs native)
Application settings (is there a vertical refresh synch option?)
Application test - have you tried running the project image in full screen (see application settings and if it matches monitor refresh)?
Is there a 2nd monitor attached? If so, unplug it from your MP and try again with the above best configured if possible.
It has been a long while since I dealt with this type of issue but you can also check other moving image software and see if the problem persists with a test file that tears on your said application. Try VLC in both window and full screen...also perhaps try MPlayerX and perhaps XBMC/Plex. The exercise is to see if it is only your one app having this problem or if its systemic. If it is the app then focus on drivers and settings. If it is across the various apps, then you have to consider drivers, bus slot, power etc.
The most difficult is when it turns out to be a combination of more than one of the above - have patience and good luck.
I'm quite basic: one GPU (the gtx 680 SC) connected to a 27" IPS monitor and nothing more.
I have updated and modified After Effects to be able to use my GPU, but I still haven't tried to use it massively.
What I'm seeing and feeling is a quite heavy overall slowdown and i can't really understand how could the GTX be part of this, but it looks like it is
