How many WUs are able to be run on a GTX 750 Ti? I am currently running 2. Interested to know the practical and theoretical limits. I am only fairly new at GPU use and wish to maximise what I have.

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My set up is similar to yours. I only run 2 work units at any time, 1 cpu per 1 AP , and 0.3 cpu per 1 MB. I know the that's kind of high for the CPU with the MB but my own personal preference. I haven't tried it with 3 AP,for me it was how long it takes to do 2 APs as opposed to how long it takes to do 1. For 2 it's about 1.6 hours each on my single GPU, if I only did 1 AP at a time then it would be 55 minutes each, so in 3 hours I can crunch 4 APs (by doubly up) verses 3 in 3 hours (for single Work unit). After looking at that, I figure 3 APs per GPU probably won't be very efficient use of my time. Haven't tried to see what the times would be, but I would think it would be more than 2 hours, maybe closer 2.5 per? I think we start to see a point of diminishing returns. If you end up doing 3 on it, let us know how it goes. Would be interesting to see what it does.


Zalster