4000 wouldn't be the best for that. If all you are using the thing is for minor web browsing and things like that, a netbook might also be a better option, they are decently powerful now. Also, I am not sure about in new zealand. But in the US you can buy a custom netbook with an i7 ivy bridge, 16gb ram, and a 650m gpu, for just over $1000. I would check that out. Check for sager and clevo, I am not sure if they sell in New Zealand though.