Sims 3, which computer is best (Graphics)

1) The first computer has a GT 220 which should play Sims 3 at decent settings without any problems. However, the first computer has a Phenom X4 9350e, a relatively slow CPU - the second build 'Isys' has a Pentium E5400 which is much faster. I highly recommend another system, an Athlon II X4 would be much better, if you can find one.

2) I'm supposing your budget is around £400 - £450? If so... then I'd go for the 'Isys' with the HD 5750, it may be a dual core but it's faster, and Sims 3 isn't too demanding.

If I may ask, why don't you have a go at building your own computer? You can choose your own parts.

For example, here's a list that should work nicely (and performs a lot better than their pre-builds):

AMD Athlon II X3 440 3.0 GHz - £64.99
http://www.novatech.co.uk/novatech/prods/Components/Pro...

ASUS M4A87TD/USB3 AMD 870 (Socket AM3) ATX DDR3 Motherboard - £86.98
http://www.novatech.co.uk/novatech/prods/Components/Mot...

G.SKILL Ripjaws 4GB (2x2GB) DDR3 PC3-10666C8 1333MHz Dual Channel Kit - £98.99
http://www.novatech.co.uk/novatech/prods/Components/Mem...

ATi Radeon HD 5750 1024MB GDDR5 - £94.99
http://www.novatech.co.uk/novatech/prods/Components/Gra...

SAMSUNG Spinpoint F3 1TB 7200RPM - £53.98
http://www.novatech.co.uk/novatech/prods/Components/Har...

Corsair CX400W 400W PSU - £34.85
http://www.novatech.co.uk/novatech/prods/Components/Pow...

Novatech Iris Tower Case - Black - £18.99
http://www.novatech.co.uk/novatech/prods/Components/Cas...

Total = £453.91

You would probably need a DVD drive as well, although you can just buy any one.

My budget is actually £600

And I would love to build my own computer but my computer skills are limited and by limited i mean next to nothing  

Is there like a site that can build a computer for you  

just get the fastest PC you can buy and toss an ATI 5670 into it. the card is simple to install and youtube has 100 videos to show you how to do it.