Feeling that Samsung's Galaxy Tab 2 7.0 could use some more grunt? There's a chance you'll get your wish. An unannounced Galaxy Note GT-N5100 has popped up in benchmark scores with what looks to be a 1.6GHz Exynos 4412, better known as the Exynos 4 Quad variant that's used in the speedy Galaxy Note II. We don't know that it's a small tablet,