This Apple service document opens with some marketing copy about the MacBook Pro:
MacBook Pro is built on the revolutionary Intel Core 2 Duo — which packs the power of two processor cores (up to 2.4GHz) inside a single chip. It provides 4MB of Smart Cache, L2 cache that can be shared between the cores as needed. It delivers higher performance in 2D and 3D graphics, video editing, and music encoding. But the faster engine is only part of the story. MacBook Pro delivers up to 4GB of 667MHz DDR2 memory with a faster, 800MHz frontside bus and support for hard drives up to 250GB. Ultimate speed, performance, and connectivity. To go. That’s MacBook Pro.
After all that, the article gets around to describing the update:
This update provides important bug fixes and improves stability with Motion 2 and Motion 3. It is recommended for all 2.2/2.4GHz MacBook Pro models.
This update requires Mac OS X 10.4.9 or later.