I didn't edit your reply , I quoted you on where you said something that isn't true. The U suffix means low power usage, that doesn't mean it's slow. Yes, low power usage chips are generally slower than normal processors but they're not slow at all, all it means is that they consume less power. These chips can handle lots of real workloads quite well while maintaining low power usage, this results in longer battery life and that's what they're made for.