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This link, which points to several more, should answer your questions.
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In your case, it probably will not help--or at least not as much as you'd like to believe it would. The problem is that you're using Premiere Pro non-accelerated plugins (Unsharp Mask) and third-party plugin which are also not accelerated. The Quadro won't help with export, and it won't help with realtime playback, either; if you're going to use these plugins, the only improvement you can make is to use a faster CPU.
Here is some worthwhile reading on the Mercury Playback Engine and CUDA/GPU acceleration:
So a 12 core MacPro instead of our 8 core would be a better move?
If so, is there any way we can figure out how much time we can shave of the exporting sessions?
We really would like to export MUCH faster than 16 hours
Wow! Only 6 posts to this forum and already I've gotten Helpful Answer!
Not bad for someone new to PP.
(I wonder where I stand on the all time # of post till Helpful Answer list?)
If you've got too much time on your hands, take a look at this PP benchmark site. I don't think there are any Mac OS computers on the site. But I think you can get an idea how much you might gain with either faster or more CPU's.
But, if you're thinking about getting a new Mac, you might want to wait. Most of the rumor sites think Apple will be announcing a new Mac Pro line by the end of this year, or early next. Based on Intel's CPU schedule. I tend to believe Apple will do so. Since the Mac Pro is still around, I would think it's because they plan on updating it. If they were going to kill, it would probably be gone.
Unless they announce that they're working on a new, awesome and revolutionary Mac Pro. And it's gonna change the way we compute.
Wait, that was FCP X. And now I'm on my PP post number 8.
Here's the thing. Those Magic Bullet plug-ins are rendered on the GPU, so a faster CPU isn't likely to knock down that render time much. The Quadro 4000 might help, depending on what you're using now. (You didn't say.)
For example, I saw a 2.5x increase in speed of exports when I went from an ATI 5450 with 80 stream processors to an nVidia 460 with 360 CUDA cores. The Quadro 4000 has only 256 cores, so it'll be slower than my 460. But if you're current card has only 80, it might be an improvement. (Though for the price, I wonder if it'll be worth it.) And it still certainly won't be anywhere near as fast as an export without MB plug-ins.
Bottom line is, if you want to use MB, you need to expect slow exports.
Wow Kip, does it really take 15-16 hours to render a 25 minute show? Thats ridiculous! I understand why, but Im curious what it might take on an Avid.