There's not enough difference between these two to even be worthy of a conversation. Either will work fine, as I said before. Neither is going to "last" longer, they are the same family with a different base clock. Same chip. There's a 200mhz difference between the two. As mentioned, this probably isn't enough to justify one over the other and the extra forty bucks MIGHT just be enough to get you a better GPU that IS worth the extra money, so I'd think that would be the smart investment.