Worth getting a graphics card for this PC?

[TristanKing]

I have a relative that plays FarmVille 2 and other Facebook games, on a rather slow PC, very lag-ily.

I'd like to know if the Chillblast PC with 4gb RAM, and an Intel Pentium CPU G840 2.80GHz, would benefit from installing a dedicated £35-£45 graphics card. If so, which card would be best around that low price range?

 

[clutchc]

If the games have framerate problems, yes. By all means invest in a discrete card. The little dual core Sandy Bridge is able to keep up with some fairly decent mid-range cards.
Depending on the PSU in the PC, the GT 730 would be a great choice at that price: http://www.ebuyer.com/store/Components/cat/Graphics-Cards-Nvidia/subcat/NVIDIA-GT-730-Series?price=20+TO+50&sort=price+ascending

 

[Usenarmy]

Overall, yes it would benefit from it. Cant say if it fixes lag issues with info you provided.
If you end up getting new gpu, check that power supply can handle it. (power and quality wise)

What comes to picking a card, I would just check what I can get, and pick the one with fastest GDDR, and widest memory bandwith.