The 960 EVO is a consumer grade SSD with firmware tuned for bursts of I/O (through eg. the use of SLC write caching) at the expense of sustained write throughput. It doesn't have power loss protection capacitors, so it can't perform safe write caching when you're issuing synchronous writes. 4kB is much smaller than the underlying page size of its NAND flash, so performance is going to suck without write combining. You're testing it in shackles, with a workload that doesn't at all match its intended use case. That doesn't make it a joke, it just makes it the wrong kind of drive to use for stereotypical enterprise applications.