I don't understand how this connects to your original claim, which was about trading ram usage for CPU cycles. Could you elaborate?

From what I understand, increasing cache locality is orthogonal to how much RAM an app is using. It just lets the CPU get cache hits more often, so it only relates to throughout.

That might technically offload work to the CPU, but that's work the CPU is actually good at. We want to offload that.

In the case of Electron apps, they use a lot of RAM and that's not to spare the CPU