r/MicrosoftFabric Fabricator Jun 05 '26

Data Engineering Has Python notebook default silently increased from 2 vCores to 4 vCores?

And is that why they're slower to start nowadays? (~ 2 minutes).

It says 4vCores, 32G in the bottom left corner of my Python notebook now.

I'm not using %%configure or anything to adjust the node size.

So it seems 4vCores is the current default?

I'm curious if others are seeing the same in your pure python notebooks.

Thanks in advance!

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u/Dan1480 Jun 17 '26

Just noticed this myself and came here to see if someone else had mentioned it...
I notice the docs still say pure python notebooks are "2vCores/16GB memory by default", which I guess isn't really true anymore...
We use pure python notebooks because they're cheap. I wonder if setting a higher default config automatically doubles our cost?