[tizoc]

From the article:

> Please note that the large spike in the TezEdge v1.15 RAM graph is caused by the update to protocol 011 Hangzhou. This included a major restructuring of the context tree, which is a very expensive operation. While the new representation of the context tree is better, it takes a while to migrate the past version’s tree to the new one.

The difference in range is caused by that spike (the "before" screenshot is from a node that has not reached that point).

Edit: you can also see the actual usage in the tooltip (and before the spike and protocol switch, the memory usage for the TezEdge one was even lower)