PC build question

[ErenO]

I'm looking to upgrade my pc with these current specs:

r7 250
core 2 duo e8400
4 gb ram
350w psu

to this

gtx 750 ti
i3 4150
8gb of ram
a motherboard that has the lga 1150 socket

Will the psu be good enough to power everything, or do I need to get a new one? I'm going to be playing games like tf2, minecraft (not very demanding games.)

 

[Rationale]

If the PSU will power your current PC, it'll certainly power the new build. The i3 and GTX 750 Ti actually take less power than your current components.

Core 2 Duo = 65 watts
i3-4150 = 54 watts

R7 250 = 65 watts
GTX 750 Ti = 60 watts

And that's a great mid-range PC you'll be switching to, far stronger than your current PC. The i3-4150 benchmarks about the same as the FX-6350, and is much, much stronger than your current CPU. It's more than adequate to play any modern games.

The GTX 750 Ti is capable of "high" settings at 45+ fps (good) in the most demanding games, or ultra at 60 fps in everything less demanding or less graphically intensive.

 

[ErenO]

Thanks for the reply, I have nearly everything that I need to know
My other question is, will I need a new motherboard for the i3? If so, how can I check my current case and motherboard form factor so that I can pick the right one?

 

[Rationale]

Thanks for the reply, I have nearly everything that I need to know
My other question is, will I need a new motherboard for the i3? If so, how can I check my current case and motherboard form factor so that I can pick the right one?

You would usually need an LGA 1150 motherboard with the H97 chipset for the i3-4150. It requires a Bios update to work on older motherboards like the H81 or B85, which doesn't really work for people with just 1 CPU. An H97 board is by far the easiest way to get it working right away.
This is a good example.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819116995&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128731&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


If that was too expensive, you could use the very slightly weaker i3-4130 on an H81, H87, or B85 motherboard with the LGA 1150 socket.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819116946&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157450&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

As for form factor, if you can find either the name of your motherboard, or post a picture of the inside of your case, I'm sure anyone here could tell just by looking at it. Alternatively, mATX boards work in almost every standard case.