http://www.tweaktown.com/news/53202/...gtx/index.html
The synthetic benchmark side of Titan X that was used was CuDNN, offering a huge 200% increase over the previous GeForce GTX Titan X (note, the new Titan X is just that 'Titan X' with the GeForce GTX branding dropped from the name). The new Titan X is using a new implementation of CuDNN, so the speedup is from both the software, and the improved hardware on Titan X.
Specifications wise, the new Titan X has 16% more CUDA cores and 42% higher GPU clocks - so in raw horsepower, we have a decent amount of hardware improvements. According to the benchmarks, we can expect the new Titan X to be 74% to 91% faster in Alexnet, 76% to 200% on OverFear, 74% to 84% on Inception and 91% to 98% in VGG.
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