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Not all cards that can use hardware MPE are on the 'supported' list, but many that are missing on that list can be found here:
The 560 works without problems as you can see in the last link above with 23 systems currently using that card, but you need to apply the 'hack', a simple addition of 'Geforce GTX 560' to the cuda_supported_cards.txt file.
The list that you pointed to is up to date. It lists all of the cards that have been tested and certified to work for the CUDA processing features of Premiere Pro.
Is there any difference in performance with "The Hack"?
Which are you asking?
- Is there any difference between working with the "hack" in place versus having a hackable card without doing it?
- Doing the "hack" and later using an newer version where the card is now supported?
And if the card isn't included in Adobe's list of MPE cards, does it have to be a "CUDA" card in order to work with the hack?
What does "CUDA" mean?
Is there any way to use an ATI or non-CUDA card using the hack? (So a Mac or lower-end card would benefit?)
Also, a rep at B & H Photo told me the "Cuadro" cards are twice as effective with the Mercury Playback Engine as GTX's or others.
Any agreement on this?
The MPE Gain - PPBM5 chart gives you the gain of using hardware instead of software MPE. Second graph. Usually that means a 10+ times increase in performance.
If you ask whether there is a difference between certified cards or 'hacked' cards in performance, then the answer is no. Not being on the certified list only means that Adobe did not test them fully, but if they meet the minimum hardware requirements they will show similar performance gains as the certified cards.