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Graphics card performance considerably below maximum


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Hello all,


So I have finally managed to get a (relatively) fully working install of OS X 10.5.2 running on my machine. There is however, one remaining issue. My Nvidia 8800 GTS 640 mb (G80) is performing considerably below its maximum potential. Thus far i have tested its performance in xBench, lightwave 3D (3d modeling, animation and rendering; view ports are openGL accelerated) and a couple games that are openGl accelerated. In Lightwave and the games, I recieved less than HALF the FPS that I got on the same hardware under windows. In xBench, I obtained scores in OpenGL and the Quartz tests that were about half of those obtained by 8800 GT cards.


Currently, I have Quartz Extreme and QuartzGL enabled (via OSX86Tools).

GFX Card: 8800 GTS 640 mb (G80)

Motherboard: I945P

Drivers: NVinject 640

Install medium: kalyway 10.5.2


EDIT: BTW, Im running two displays, if that makes any difference


Does anyone have any idea what is wrong, or how to fix it? I have been browsing the forums for some time to no avail.

Thanks in advance,


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Forget XBench OpenGL Values - even an GMA950 gets better values than an ATI 2600XT!

Those values are NOT near any reality: much to small window, only OpenGL 1.1 test , Xbench NOT updated/recompiled since >2 years!!



For comparing (OS X+Win) GPUs OpenGL Extension Viewer has Benchmark inside (tAB Test).



For benching use fullscreen, as much resoslution in 32 Bit your moni can handle, activate bench option.

If you cant run at high res (1600x1200, or equal +) because small res TFT, you can activate FSAA*2 or FSAA*4, both forces the GPU to hard work - so also

res at 1200x800 are good to measure+compare (FSAA*2 or *4 enabled).


My ATI HD3850 gets this results left: 1600x1200 res, no FSAA, bench mode , right: 1600x1200 res, 2* FSAA, bench mode

You see: fsaa*2 is hard work for gpu, values 1.1 to 2.0 go down ! value 2.1 (shader test, res independend)



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Hi, thanks for the replies!


My Opengl Extension viewer results are posted below. They did pretty well, although I should probably run the same tests under Windows to compare. After some further tests, Im starting to wonder if the poor OpenGL performance is simply dependant upon the application I am using. I will test this further as well.


As for the 9f9 and EFI strings, I am unsure what to do for these. Sorry if I am a bit slow, but this is all very new to me. After a bit of searching, I found and downloaded EFIStudio, however, I am unsure what to do with it. There seems to be a lack of documentation for the application and EFI Strings in general, though that could just be a result of poor searching on my behalf. Any info on this topic would be greatly appreciated.



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