What will be my fps for Minecraft? PC specs down below?

Intel pentium
gtx 750 ti
This question is for my friend. He said the computer is from 2004. I'm not sure what the ghz if or how much ram it has but how many fps can he rum minecraft or any other game that you can determine. Like counterstrike or battlefield.

I take it your friend not very tech savy but ok first things first he has a decent gpu but a pc from 2004 with an intel pentium probably doesn't have a very good power supply to handle your gpu and an and i don't think your cpu can really handle too much gaming. I don't mean to come down on you and your friend need do a little research before buying hardware you can't just stick it in and hope it works.
basically with your gpu in a decent system you would get 100+ fps but your pc is gonna bottle neck your gpu so what it comes down to is the pc is too old

with out knowing all your specs i can't give you a sold answer but try this site it will tell you what your pc has under the hood and if it can run it

http://www.systemrequirementslab.com/cyri
(may need to download or update java)