I will run it fine, as I was running it all right on a 550gts for a while on medium pretty well. (Though I would suggest taking a look at AMD cards for the cheaper price if you are planning on buying that or thinking of getting a new one if that is the card you have right now. I got a 380 for about 240 a few months back. great card.)
Also, don’t be expecting a AAA fps right away! Start small and learn the engine.
Though this is all just my 2cents!
P.S. What are your current specs? Or is that your current specs right now? (What is the specs on the i3? Cores, GHZ?)
my pc right now is poop it has a core 2 duo 4gb ram and a intel q43 gpu it can barely run udk at 6fps
but I’m saveing up to build one I can make one with a intel i5 a nvidia gtx 960 and 8gb ram for £570