For some time now maintains Samsung’s strategy, not to replace existing products and series by newer, but to complement them. Therefore, the product range of the Korean SSD manufacturer was widened especially in the last two years. While there have been with the SSD 950 Pro or the SSD 750 Evo quite product families, but also existing series like the SSD 850 Pro and SSD 850 Evo were also extended to other models. So you can for a few months bring Flash drives into the house, which, having very high capacity of 2,000 GB for an SSD, which is aimed at end users. Even if the price of the two drives with 590 (SSD 850 Evo 2 TB) or 830 euros (SSD 850 Pro 2 TB) is still very high, a market for this class of SSDs seems to be quite yet, because Samsung sets today by: the SSD 850 Evo 4,000 GB, which we undergo in a test of this product.
Samsung SSD 850 Evo: It’s an Evo!
The SSD 850 Evo is not the first drive of this group, which we test. And it shares many features with its predecessors have long been available. The 850-Evo lineup aimed at the upper mainstream customers and offers very good performance at a lower compared to the Pro-Series price, the Evo models but still not one of the cheapest deals on the market. The SSD 850 Evo series now therefore increases to a total of six models whose specifications differ as follows:
The most important feature of this SSD lineup is the TLC VNAND which not only stores three bits per memory cell, but additionally a certain number of layers planar NAND stacked one above the other. So on the one hand increases the storage density, on the other hand, the structures may again grow somewhat in width, so that the memory cells to win back some of the robustness (with respect to the maximum possible write cycles), they in the course of the development of nands of SLC on MLC have lost out to TLC. In the 4-TB version of the SSD 850 Evo NAND is fitted with a total of 48 layers, represents the current maximum level up from VNAND at Samsung and the smaller the Evo models are gradually converted. There came, until recently, only 32-ply VNAND used. Spread the capacity to a total of eight packages, each with 16 chips, which one of the silicon wafers can store 256 Gb.
The Samsung SSD 850 Evo with 4 TB holds also in other fields of Serie traditions. Thus, the drive continues to use the turbo write technology, in which a part of the memory as TLC-SLC NAND is described with only one bit per memory cell. Compared with the full utilization of the TLC-capacity, the writing speed increases tremendously. The capacity of this buffer is the biggest 850 Evo still at 48GB. Really needed the drive has this cache but no more: The speed especially the larger models is 500 barely below the value specified in the specification, as these any TLC speed bottlenecks can compensate better with interleaving. The standard DDR3 cache is also very generous for SSD ratios: Samsung treats the 4TB version of the 850 Evo entire 4 GiB LPDDR3 data buffer. The SSD thus has a greater maneuvering space available for data as some graphics card currently in operation in the. The controller does not differ from the 2TB version: It comes back to the MHX-chip is used, which was necessary with the previous capacity expansion to 2 TB because older controllers do not support such amounts of memory.
The term of the warranty for the SSD 850 Evo with 4 TB remains at five years, a value which is normally only offered for a manufacturer’s high-end models. In addition, the SSD 850 Evo (4 TB) has been working with the manufacturer’s own migration software and the latest version of the Samsung Magician along which to easily monitor the SSD or even improved over provisioning by a unpartitioned space and features such as the Rapid Mode, Secure Erase or firmware upgrades possible. Both tools offer Samsung as download, but are also the SSD on a disk in. More may useful accessories such as an adapter frame to 9.5 mm, the drive is missing.
Samsung SSD 850 Evo: performance of SSD (4 TB)
If we compare the performance of the new model with the half as great predecessors, there is usually very little difference. manages the current top model, is able to keep his IOPS performance during the one-hour tests at the maximum value. The specific with AS-SSD sequential speeds are a few MB / s below those which reach the 2 TB version. In turn, the 4 TB drive for batch processing a few seconds faster. Also in the copying test, it can secure two to three seconds ahead. All in all, the SSD 850 Evo with 4 TB a very fast drive, the differences with the earlier models to be judged just as, but not feel