seriously doubt its really 1.9ghz. just because the benchmarks show that doesnt mean its the real time speeds. when prime first got ICS, everyone benchmarks showed 1.6ghz. but cpu spy proved this to be wrong. The higher speeds was in the kernel but wasnt enabled, out the box. only way to achieve that speed was through root.
same can be said with the infinity. Its real time top speed is likely 1.6 or 1.7ghz. but it has 1.9ghz in the kernel and only way of enabling it is through root. CPU SPY is the only true way of seeing. put your infinity pad in performance mode then run cpu spy. if it doesnt show 1.9ghz enabled and being used, then thats not its real speeds.
you might be able to root with sparky new tool. what firmware did it ship with? if youre successful in rooting, then install the ezoverclock app. see if it lets you enable 1.9ghz. worth a try if youre going to root your device.
make sure to post a screenshot of cpu spy. we will be able to tell what speed its really running at. its clocked higher than stock prime so of course its scores will be alot higher. but in comparison to a overclocked prime at 1.6, 1.7, or 1.8 Ghz, primes scores will likely be higher. we still pulling higher scores than HTC One x and others. this is with an overclocked prime of course. or enabling the higher speeds in stock ics kernel. even 1.6ghz puts prime around the top still and higher than most.
edit: for those people asking, i thought i mentioned it before. but the inifinity pad can use the prime dock also. it even runs off the same firmware version. i believe the infinity pad has its own dock but can be used with prime dock also.
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Prime/Tegra3 Gamers Thread