It is fair to say that both SSDs identified by Kingston have the same format, that is, they have M.2 2280 standard form, though it is true that in the introduction they used the expansion cards PCI-Express the simplest and most user-friendly installation. In any case, the main difference between the two is the interface, since even though they are both physically identical, one is PCI-Express 4.0 and the other is PCI-Express 3.0. In any case, they are both consumer-oriented and middle-class, so we can tell you that will be sold at containing prices.
Kingston Seccos, new NVMe PCIe 3.0 SSDs
Let's start at the end. These new SSDs use the interface PCI-Express 3.0 x4, and ironically, Kingston didn't decide which one they used (certainly for Marvell, but as we say the manufacturer doesn't say anything about it). They use chips 3D NAND Flash TLC with capacities ranging from 250 GB in the most basic model to 2 TB in the most advanced model.
Kingston pointed out some performance data on CrystalDisk Mark for this "Seccos": 3449 MB / s read and 2839 MB / s. According to the manufacturer, the theoretical data is 3500 MB / s for reading and 3000 MB / s for writing, so in any case they are close to real.
Kingston Grandview, the new king of the middle class
Since the advent of PCI-Express 4.0 display and new AMD platform, manufacturers have opened up to building more efficient SSDs to take advantage of the large display bandwidth. The problem is that users who upgrade to this AMD platform are forced to sell large sums of money in order to get an SSD according to it, since only devices are included in the higher grade.
Kingston aims to put an end to this new venture Grandview, because they are SSDs with PCI-Express 4.0 x4 interface and protocol NVMe 1.4 that take advantage of the effectiveness of these interactions, but tend to midrange and therefore his the price will contain more content (They do not say a specific price, but it will be significantly lower than the current market models currently).
Speaking of numbers, these SSDs will be sold at capacities between 500 GB and 2 TB, and are fitted with a Marvell «Whistler Plus» controller at 12 nm for 4 channels and 1.2 GT / s for bandwidth for each channel. They did not provide performance data, nor did they come and explain that these devices would have TLC or QLC chips, so we would have to wait a little longer to know this information.