A quick lesson in how to understand BS marketing materials in HPC:
Step 1) Look up the launch date of the processors being compared.
Step 2) Look up the price of the processors being compared.
Here we have a performance compare of an NVIDIA K40 GPU to an Intel Core i7-3930K CPU (I have no idea if more than one core was used; marketing people at NVIDIA seem to be blissfully unaware of the OMP_NUM_THREADS environment variable).
First, the K40 launched in November 2013, so it's approximately two years newer than the CPU. A more appropriate comparison would be an Intel Core i7-4930K or an Intel Xeon E5-2697V2 released only one quarter before the K40.
Second, the Intel CPU to which they compared costs less than $600, whereas the K40 GPU costs in excess of $3000 (according to NewEgg and Amazon). I'm not an accountant, but that seems like a price difference worth noting.
Sometimes to have to ask yourself, should I start computing today, or should I wait 2 years and spend 5x the money to run no more than 6.5x faster? Because running 5-25% faster per dollar with hardware that is two years newer doesn't exactly impress me.