AMD Processors vs Intel Processors: Laptops
As with ultraportables, both AMD and Intel offer processors suitable for mainstream laptops with display sizes between 14 and 18 inches. In this AMD processor vs Intel processor battle, however, Intel clearly wins at every turn.
The problem is that AMD doesn't have a suitable high-end, or even mid-range, laptop processor architecture. The AMD Turion and Athlon processors found in mainstream laptops are just modifications on the desktop processor architecture that AMD has been using for years. They're scaled in performance in order to fit within the power limits of a laptop, but remain unable to provide decent battery life.
Intel's Core i3, i5 and i7 processors are better in every way. The Core i3 and i5 processors provide far better battery life (in certain laptops) and are significantly quicker than what AMD has to offer. In the SiSoft Sandra processor arithmetic benchmark, for example, I've found that Core i3 powered laptops are almost twice as quick as similarly clocked AMD Turion II laptops. The mobile Core i7, battery hog though it may be, is in a class of its own.
That's not to say you should never buy an AMD product. There are some very inexpensive AMD laptops available, and the performance is adequate. AMD processors are also often paired with discrete Radeon mobile graphics, which is great for gaming. Just remember that an Intel laptop will be noticeably quicker in certain tasks, such as encoding video or editing photos.