* RWilliams grabs some popcorn.
Badump-bump... I'd like to see them prove this claim out though. Should be interesting, especially from a graphics standpoint.
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More cores result in better performance,Devices N VIDIA.
Notice how Qualcomm has backed away from 'we will crush the Tegra 4 performance with the S600' to 'we will beat the Tegra 4 with the S800' and started emphasizing ecosystem and on-die LTE. I think I know why.
We can take the perfomance numbers from this comparison: http://asia.cnet.com/qualcomm-snapdragon-600-fares-well-but-loses-out-to-nvidia-tegra-4-62220696.htm and extrapolate S800 performance.
It's not much to do on, but we can calculate performance per cycle for both the Quadrant and Geekbench2 scores, since we know the scores AND we know the clock rates (1.9G for the T4, 1.7G for the S600). From this I calculate that t4's a15 cores are 125% more efficient over the Krait core for Geekbench2, and 119% superior for Quadrant. The average is 122% more efficient than the Krait cores for these tests.
Now, let's look at the difference in clock speeds: the new S800 tops out at 2.3G; the T4 at 1.9G. Using those numbers we see that S800 clock speed advantage is ... 121%. If the T4 does reach 2G, the difference is 115%.
Conclusion: the S800 is not going to blow the doors off the T4 unless the Krait cores are more efficient than those used in the S600. The clock speed advantage is negated by the lesser efficiency offered by the Krait core versus the a15.
Of course, all this is back of the napkin scribbling about 2 benchmarks. A lot of factors could come into play: memory speed could result in lower scores for S800, or Krait core improvements could work the opposite way. But in the end, my guess is the performance on these parts is really going to be quite comparable.
QC has moved from claiming they will "crush T4 peformance" to "we *think* we will do better than T4 on *most* tests". I expect more back peddling on performance, and more emphasis on the "we beat T4" in terms of packaging (e.g. integrated LTE) or other softer factors.
This constantly shifting story make me think that, behind closed doors, QC is actually quite impressed and afraid of the T4 (and T4i).
Seems I am not the only one extrapolating these recent results :)
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