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Re: Problem with NVIDIA GeForce 8600M GT on MacBook Pro?



Yep. The 8600s seem to have terribly performance in QC as discussed on a previous thread. I use the world "terrible" based on the fact that this is a newer, supposedly faster card, and yet I'm seeing 30-50% lower FPS in many cases than the older ATI Radeon 1600s.

I've seen this in a very simple patch which just loads to quicktime movies and plays them back on a billboard (no iterators or 2nd QC renderer active as in your bug report)

I hope this is either a QC issue, or a GL driver bug/issue, and not some fundamental hardware limitation...?
-mike



On Feb 26, 2008, at 9:01 AM, Adrian Ward wrote:


Hello all,

I'm observing a dramatic reduction in FPS on a MacBook Pro with an NVIDIA GeForce 8600M GT when more than one composition is running, and one of them involves passing a structure of images into an Iterator patch.

The attached ZIP file contains a demonstration of this problem, instructions for reproduction included in the readme. I don't get this on other machines so I'm assuming this is limited to this specific NVIDIA card but I'd be grateful if anyone on this list could confirm (or otherwise) this problem.

Caveat: Requires 10.5

I'll be submitting this as a bug to Apple soon


Cheers,


Ade.



<Slow FPS Problem.zip>

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References: 
 >Problem with NVIDIA GeForce 8600M GT on MacBook Pro? (From: Adrian Ward <email@hidden>)



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