I wonder the same. From what I understand even the P400 which is the cheapest one supports 10 bit monitor output. Is it adequate?
That would really depend on what you seem to be adequate. For example, if you’re running two 4k screens, and I’ve no idea of the P400’s specs, then if it has, say, just 1-2GB ram, it definitely wouldn’t be adequate as that isn’t enough ram to support two 4k screens, remembering that the amount of onboard ram required is determined purely by what resolution one is running. Another example could be the number of processing cores it has, nVidia calls them CUDA cores, might not be enough for smooth and responsive scrolling, zooming, moving the image around the Ps workspace and anything else which Ps expressly uses the gpu to carry out a particular function.
In the end, only you can determine what is adequate because what’s adequate performance for you might be absolutely dismal performance for someone else.
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