So i currently own an intel pentium g3258 and a gtx 750ti and am looking for parts to upgrade. i have settled on a GTX 1050ti and an intel i5 4460. The only problem is I dont know if the ~£300 is worth the upgrade, and i cant really go above that price because for one i dont have a lot of money to spend on parts and i also need a case because my current one has a broken side panel and terrible power button. If anybody can tell me how much more of an improvement the new parts would be to the old parts i would appreciate it a lot to finalise my decision, thanks!