This is your friend for big compiles: http://shop.lenovo.com/us/itemdetails/0A36280/460/2D575BF5CD7E44E58547BFB52CC4F8E9 http://shop.lenovo.com/us/itemdetails/

This is your friend for big compiles: http://shop.lenovo.com/us/itemdetails/0A36280/460/2D575BF5CD7E44E58547BFB52CC4F8E9 http://shop.lenovo.com/us/itemdetails/0A36280/460/2D575BF5CD... Weighs a bit but you'll get another 5 hours :)