There's a very important distinction to make between Graphics Cards, Integrated and Dedicated.

An integrated GPU is built into the motherboard. As a result, it will not have its own memory and its performance is generally severely crippled. The chip itself will be short several features in order to properly fit into the northbridge of the motherboard, and it will have to borrow memory from the system RAM. This takes memory bandwidth from the system itself and can hinder overall system performance. Integrated Graphics run very cool and have very low power consumption to maximize battery life.

A dedicated GPU is separate from the motherboard and generally has its own memory. Dedicated Video offers superior video and gaming performance but also consumes more power and provides less battery life. [view dedicated score chart below]

HYPERMEMORY AND TURBOCACHE

ATI and nVidia have developed technologies that allow the use of system memory as a buffer for graphics performance. The memory of the dedicated GPU itself expands from your system ram when the system needs it. The nice thing is that this can offer a healthy and very inexpensive performance boost for chips that would otherwise provide less performance. The problem is that system memory is almost always slower than dedicated GPU memory, so it's no substitute for having dedicated video memory.

"User Upgradeable" Video

When you see a label such as this listed after some of our Video Cards it means the system can be upgraded by the end user to different cards that are being offered with the system providing these alternate video card choices. This also means the video card is not soldered onto the system board and can be physically removed by the user at a later time. Video Cards that are not soldered on the system are normally utilizing nVidia's MXM Technology. For more info on nVidia MXM please go here.

This term does not mean a user will have the ability to upgrade to a newly released card but rather any of the current offered video cards.

Useful Links:
ATI Mobile Cards
Nvidia Mobile Cards