Nvidia GTX query/Laptop questions

[Stone21]

Right so as the title states, this is related to Nvidia Cards.

Currently as it stands I have a GTX 650 CU TOP (The Asus OC edition) which has served me well and..has actually be surprising in a few games so far. However the end of the year is vast approaching and with black Friday just a few days away. I felt like I'd bump it up to something a little more gutsy. For whenever I decide to shell out large amounts of money for Just Cause 3, Tomb Raider. Etc etc.

One card caught my eye and it was the GTX 750 Ti, more specifically, This one

Though I'm not entirely sure if it would be worth it. I'm not really wanting to spend more than £100 on one considering what I have now still has a bit of life left in it. I run my monitors at 1920x1080 and as long the FPS isn't lower than 40 I don't really notice a difference between that and 60FPS. If the FPS is within that margin I really don't mind. I am also limited by my CPU since I think the card I'm proposing is pretty much on the ragged edge of what that the CPU can cope with when it comes to games. But the board is capable of a higher CPU if push comes to shove (Goes up to an i7 4XXXk - Can't remember exactly)

Current PC Spec:
Intel i3 3240 @ 3.4GHz (HT/4 threads)
8GB DDR3 dual channel- 1333Mhz (I think)
GTX 650 (Asus OC edition)
1000W PSU (Yes, seems a bit extreme but I got it as a gift from a friend so why not use it?. Plus its silent when in operation )

Comments/suggestions? cheers!

Well if the board it's capable of a higher CPU I would recommend one i5 CPU. i7 is way too expensive but if you have the money and really want to buy an i7 go ahead.
As for that graphic card I would check other graphic cards to see if there are better models with better prices. Good luck!