While this product is very much an entry level SSD using a DRAMless design, if you have an older secondary system that may have been using an 80-120GB SSD (such as the older SATA 2 ones from intel, OCZ and other companies), then this SSD offers a noticeable performance boost.I used this to replace a failed SDSSDH-120G-G25 120GB Sandisk ultra SSD, which was used as the main system drive for a media center PC. The process to restore was quite fast, as I only needed to restore a system image from my weekly backups.Details about the drive:I am unsure of variations in production, but the unit I received, details the following for the controller and NAND. While I have not personally experienced, it, some people have complained about the company changing hardware while keeping the same model number so long as the hardware meets or exceeds advertised specs. If this holds true, then it can mean the potential for variation between devices received, but the combination of Controller and NAND that I received, has worked wellController: Phison PS3111-S11NAND: Toshiba 15nm TLC NANDStrengths:Great read performance: Tasks such as bulk transfers (datasets that do not need a very high IOPS), would hover around 500-540MB/s. From my initial stress testing before using it as a system drive for the media center PC, I used it as a secondary game drive for 2 days, trying games such as Ark Survival Evolved, and The Witcher 3. For load times, performance was in line with higher end drives such as my Samsung 850 Pro, thus showing that games that are not IO intensive, do not need a very high end SSD to get great load times.Decent write speeds for a DRAMless TLC drive: Write speeds are slower due to the DRAMless design and small process node TLC NAND. If copying a single massive file e.g., 20+GB video, you can expect speeds in 450MB/s range, but if you are simply copying a folder with mixed files, such as a folder of image files in the 15-30MB range, will drop to the 280-350MB/s range. The peak speeds you see in most synthetic benchmarks are only achievable on linear reads or linear writes.Low temperatures: One benefit to lower end SSDs, is they do not generate much heat. Even when installed on the SSD mounts located behind the motherboard tray (where there isn’t much ventilation), the drive peaked at 30C during a stress test, even though the ambient temperature in the room was 23CWeaknesses:Large drop in performance compared to higher end SSDs, when it comes to high IO mixed workloads, such as if an application such as a screen recorder video editor using it as a scratch disk. You can have as little as 15MB/s worth of high IOPS writes (many tiny writes), and it will take linear reads down from the 500-540MB/s range, down to the 350MB/s range, wall while having no CPU bottleneck (no signs of the process scheduler using 100% of CPU time from any o the cores). This is common for all DRAMless drives where they struggle with mixed workloads. It still handles these tasks better than any of the older SATA II based SSDs that I have used, but it is much slower than modern MLC NAND SATA III SSDs with DRAM onboard.The use of 15nm TLC NAND will mean that write endurance will be low on these drives. This is perfectly fine for users who will mostly be doing reading such as using the drive for game installs, or as a system drive for a computer where you will not be working with many files on the SSD. In my case, since the media is stored on a NAS, the SSD will see very little in the way of writes. The 240GB model is rated for 80TB of writes over the life of the drive. This basically means that it would be a bad choice for write intensive workloads. This ultimately reduces the versatility of the drive, but as long as you understand the limits, and thus make an informed decision, this is a great value for an SSD.