I'm doing some Handbrake conversions on two machines. One is the 2011 imac with the i7 2600 processor and the other is a laptop with 1.3GHz i3 Sandybridge ULV processor. We know the i7 is a quad core with Hyperthreading at 3.4GHz with power consumption of 95W maximum. The i3 2357M is a dual core with Hyperthreading at 1.3GHz with power consumption of 17W maximum. Under Windows 7, the average fps for the i7 is 56 and for the i3 is 19 fps. I find hard to believe the near top of range desktop i7 is ONLY 3 times faster than the slowest Sandybridge ultra low voltage mobile processor. Both machine is convening the identical batch of videos into same format and have enough RAM, 12GB for the imac, 6GB for the laptop. The CPU usage for both machine is near 100%, I'm not sure if the i7 is in turbo mode, but the i3 don't have that option. Anybody else think its strange the i7 performance in Handbrake is so "poor" compared to the slowest Sandybridge processor?