In part I, I compared the 2012 Nexus 7 before and after a reboot. In part II, I compared the 2012 Nexus 7 running Android 4.2 and with the same tablet running Android 4.3.
Today, I compare the 2012 Nexus 7 running Android 4.3 with the brand new Nexus 7.
The new Nexus 7 features a new CPU and GPU, a refined design, the latest Android version, both front and rear cameras, and a bunch of other improvements. Personally, I'm impressed with how good it feels to hold; the slightly narrower bezel really does make a huge difference. But, I digress... onto the benchmarks!
For these tests, I will be using the AnTuTu benchmark app.
For
each configuration, I ran the benchmark ten times. For the original Nexus 7, the average of the benchmark results was 11,977 with a
standard deviation of 178. The new Nexus 7 scored an impressive average of 20,249 with a
standard deviation of 240. The new Nexus 7 is clearly much faster!
As for the subsystem sections of the results, the CPU scored on average 28% faster. The RAM was 42% faster and the I/O was 7% faster. But the GPU really took the crown with performance that was 169% faster. I could see the difference in the graphics benchmarks: whereas before, a couple of the tests had such low framerates that it looked like a slideshow, now those same tests are much smoother.
It's not strictly necessary in a case like this where the performance is clearly improved, but for fun I went ahead and performed a t-test, which is a statistical method
for determining how much of the difference between two sets of
measurements is attributable to the variable that changed. The average difference between the two trials was 8272 (with a standard
deviation of 295) or roughly a 69% performance increase. And the t-test confirmed that the >8000 point difference was due to the actual difference between the tablets (and not just statistical noise) with a >99% probability.
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