First of all, $450 is a lot of money to shave off of anything. When it’s taken off a $1,300, it’s considered a substantial rebate. In this case, it’s on a Lenovo IdeaPad Y580, which happens to be a laptop that comes standard with 8GB of RAM. Think about that for a second: that’s a lot of RAM. The MacBook Air this is being written on has 4GB. And it cost more than the $849 you’ll have to pay after rebate for this one. You also get a Core i7 processor, 2GB NVIDIA GTX 660M graphics and 500GB HDD.