Can somebody explain what makes Leela as strong as Komodo?

[Dann Corbit]

In order to use GPUs with standard chess, better recursion is important. It is already partially addressed.
The most important thing is memory access.

If the CPU can use the GPU video RAM directly instead of copying back and forth (there are some model systems that do that) then both CPU and GPU can operate on the same data with no copy lag.

Then you will really have something extraordinary.