OVH Can be disks easily switched between servers?

I'm considering between Intel Xeon E5-1620v2 - 4c/8t - 3.7 GHz/3.9 GHz
and Intel Xeon E5-1650v3 - 6c/12t - 3.5 GHz/3.8 GHz

The difference in money is huge ($90) but I like the idea the latest CPU has 6 cores instead of 4. All the other server specs are the same (128GB RAM and NVMe soft Raid 1).
The main purpose of this server is to run forums I recently bought (vBulletin and XenForo) so I don't know if the CPU will have a big impact on performance in my case.

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If I need to switch servers (and upgrade to the better CPU), can it easily be done?