I can’t speak for OVH specifically but I’ve recently been moving more and more jobs from AWS to my own hardware. I bought a couple of servers with older hardware (DDR4) and they’re way faster than what I was paying quite a lot of money for from AWS. The craziest part is that they pay for themselves after only two months. I wish I’d done it years ago.

So if buying hardware makes sense, go for it over renting a server. You only pay the memory tax one time.