Two FAQs about the MacBook's Graphics.

I see the MacBook uses the same GMA 950 integrated graphics as the Mac mini—should I be worried?

This is a consumer laptop, and as a result Apple has made some technological sacrifices. One is the MacBook’s lack of a graphics chip with dedicated video RAM. It’s the same graphics as you’ll find in the Mac mini. For most tasks, you probably won’t notice the lack of a video card at all—but if you try to play a 3-D game, you’ll see the difference. And the MacBook’s Core Duo processor can overcome many of the limitations of its graphics system. For example, we played back numerous 1080p high-definition videos with nary a hiccup on both the 1.83GHz and 2.0GHz models. And don’t forget that the MacBook improves on the resolution of the models it replaces.

Why does Apple only sell MacBooks with RAM in pairs that use up both RAM slots? The MacBook Pro ships with one RAM module instead of two.

Like the other Intel-based Macs, the MacBook uses dual-channel memory. Although you can put RAM in just one slot, when installed in matched pairs, the RAM can achieve its maximum throughput. According to Apple, you probably wouldn’t notice much of a difference on the MacBook Pro, which has a discrete graphics card. But on the MacBook, which shares up to 80MB of its main memory with the onboard graphics system, the extra speed you pick up by interleaving two separate RAM modules is vital.

-MacWorld. more details-->http://www.intel.com/products/chipsets/gma950/
http://www.macworld.com/