i'm after replacing my trusty old P2 ibm laptop, i've seen a few dell 6400 pentium dual cores for sale around the £500 mark it will be mainly used for surfing and playing a bit of wow, i've seen one which has a radeon X1400 graphics card and one that has a geforce 7300 card, is there much of a difference between them performance wise and can the cards be upgraded in the future, i'm a bit out of touch with specs these days are these cards the same as in a desk top 
