Then again, unless you need them for a specific purpose, a $500 to $600 laptop will handle 99% of business programs: Office, Quickbooks, email, etc. In the corporate world, the average employee doesn't need a fancy GPU, the fastest CPU, and the max RAM.
Give you an idea: Old laptop: 2Ghz Core2Duo, 4GB of RAM, integrated GPU running Windows 7 Home Premium 32-bit. I can work in a 300+ page Word file, and there's no lag. I can have 10 tabs open in my browser as well, and no lag. The only program I've noticed lag is Photoshop, but that is expected on a lower end system such as mine.