On: Your data fits in RAM

[threeseed]

But you're assuming that memory is the only thing that matters here.

10x100GB will have 10x the computing power of 1x1TB server.

[bakhy → threeseed]

Ah, yes. Thank you!

Although, that means the 10x setup must cost much more. I think the idea in the comments above was taking 10 cheaper, weaker servers and somehow coming out with roughly the same price...

Well, in any case, things just got too complicated :)