One of the first things that many notebook users look at upgrading is the hard drive. Most of the notebooks on the market today come with small hard drives and the cost of having the computer manufacturer add a large drive is often much more than what you can put a larger drive in for yourself. Seagate has a new 500GB 7200rpm notebook hard drive called the Momentus 7200.4 that we will be looking at today. Read on for all of the details on the Seagate Momentus 7200.4 500GB HDD.