I also read the older edition and got the 4th for the second read recently. I felt that the updated coverage is more on the GPU side than the language side. It

I also read the older edition and got the 4th for the second read recently. I felt that the updated coverage is more on the GPU side than the language side. It covers new GPU features and architectures well. I don't think it covers Tensor core things. But I might be wrong. So it's worth the update if you're interested in general NVIDIA GPU evolution.