I was running some framerate tests and I discovered that the use of bound pattrs instead of send/receives can have much influence on the performance of a patch.
I send a random value to 300 receives every 1 ms and have a movie running at 100 fps. Then I send the random values to 300 pattrs and the fps of the movie drops to 50 fps.
I'd say that basically the bound pattrs and the receives perform the same task.
I attached the patch I used. I tested on a Mac Pro 4 x 2,6 GHz