Mac Pro 1,1 - any CUDA options?

Hi All,

Hoping someone can help....we have a few old 1,1 mac pros here and I'm trying to see if they can be optimised with CS6 before we upgrade....

I understand there are only a couple of 'authorised' GFX card options for CUDA on mac and from what I can tell they all need a minimum 3,1 mac version with 1666 bus speed.

Got a Quadro 4000 running on a 3,1 great, but wondered if anyone had managed to squeeze and GPU acceleration out of an older machine?

Thanks,
Jim

-------------------------------
Production Premium CS5.5 - Mocha v1.5
MacPro 3,1 8-core 3.2GHz / 32GB RAM / NVidia Quadro 4000 / OSX 10.6.8
Decklink Extreme+ 3D / 3TB RAID-0 local / 6TB XServe + United Digital RAID on 10GbE