What screen resolution will I get?

Hi,

I'm about to buy a new monitor, to connect to my Macbook Pro 15" mid 2012. Now the thing is that my computer only supports up to 2650x1600, and I would like to buy a 4k (3840x2160). I will most likely buy a new computer (macbook) within the next 12 month, that supports 4k, so my question is: If I buy a 4k monitor now, will it still work on my current computer, but with a resolution that is limited to 2856x1600 (or 1440), or will it simply not work at all? I.e. I can live with a resolution of 2856x1600 (or 1440) until a buy a new model.

My idea was to buy the: Samsung U28E590D.

I use my computer for my university studies, stock analysis, and music production. No gaming at all. What monitor could you recomend with a limited budget?

Min. 27 inch,

Min. 2856x1440, but I would prefer a 3860x2160.

As little latency as possible.

ANY RECOMENDATIONS?

Best regards,