Kevin is right -- 3081 uses 7 year old Dell Latitude laptops as our programming and DS machines and they work fine.
If you're having build perf issues, and have at least 2GB RAM, you should upgrade your disk to an SSD --
http://www.newegg.com/Product/Produc...8484 600038478 lists a bunch of choices in 120GB size. I'd consider the Kingston one at $59 with free shipping.