Benchmarks:

3DMark 06: 3,517

Cinbench 10: 8,093

Battery Eater 05: 177

Okay, so the Yoga is certainly not a gaming beast. But Intel's 1.70 GHz Core i5-3317U, which has two cores capable of delivering four processing threads with bursts up to 2.6GHz, outputs a surprising amount of giddy-up.

Upgrading to the faster Core i7-3517U, which runs at 1.90GHz with bursts of up to 3.0GHz and has a 4MB cache vs. the Core i5-3317's 3MB cache, will give you even more CPU kick.

The presence of the solid state drive, in conjunction with Windows 8's renewed emphasis on fast boot times pretty much results in an instant-on effect when coming out of sleep mode. And booting up the system - something you probably won't do all that much - is equally gratifying, taking less than 10 seconds.

One of the nice things about the Ultrabook specification is that it creates a consistent graphics platform. This should help negate many of the driver-oriented problems that create problems for Windows systems coming out of sleep mode.

Our only real concern is that the battery life is squarely average. In our Battery Eater test, which maxes out the system until the battery dies, we only clocked 177 minutes, which is short of the 200-minute gold standard. This said, in normal day-to-day usage, we experienced closer to six to eight hours of life, depending on the screen brightness and CPU saturation.