Minecraft FPS

Turning Vsync off is a possibility, but it doesn't really make sense. You could get more graphics card updates then monitor updates, but you'll only see the monitor updates as they simply can't go faster.

But actually, what is your problem with 50 fps? The human eye can only register 25 fps, so everything above this is just nice to have. As long as your fps doesn't drop below 30 (which is a value commonly used as threshold to have some buffer for spikes) everything is alright.

 

In minecraft the graphic card often isn't the bottleneck. There is not much it needs to do compared to the CPU. For example I have a R9 290 Vapor-X OC and a GTX 680. Both high end graphic cards. But still the ultrabook with an extremely slow mobile card which is not meant for gaming and can't even properly run 2 year old games gets similar fps in minecraft. (The 680 and 290 run today's games on high settings with 60 fps where the ultrabook would struggle with 2-5 fps.)
In most of the cases (with minecraft) the cpu is the bottleneck, here you would look for something with great single-threading performance and a lot of potential for overlocking. Maybe even turn a few cores off to make a little more room for overlocking. <- but honestly that would be minecraft-fps-phile
Anyways I don't see much difference between the 1270v3 @ 3.6 GHz I use and the I5-750 @ 4GHz and the I7 in the notebook which is only at 2.4 GHz. While those GHz tell nothing specific about the actual single threading performance, it is hard to compare them. The old (first gen.) I5-750 should be super slow in terms of single-threading but as it is overlocked from 2.6 to 4 GHz idk how it really performs.