PCMark 7 uses traces based on relatively modern software from the Windows 7 era. Because this benchmark uses modern real world applications, we consider it to be the most important benchmark (along with PCMark 8) for determining which SSD you should buy, assuming you're buying an SSD for consumer applications. One difference with PCMark Vantage, a benchmark which we no longer run for SSDs because it is simply too old by now, is that PCMark 7 plays the traces in real time. Because of this, there is less variance in the scores of SSDs, but the scores themselves are much more indicative of what you should expect in terms of actual real world performance.
In PCMark7 the new 3D NAND SSDs show excellent results; they are at about the same level as the Samsung 850 Evo.
On the next page you can find the subscores.