Not only are they 1000x slower than memory, if you bump into thermal management, much slower than that. Worse, if you run into wear leveling write amplificatio

Not only are they 1000x slower than memory, if you bump into thermal management, much slower than that. Worse, if you run into wear leveling write amplification, orders of magnitude slower. Yes, you can use caching to hide this, in main memory and on the device (safely and unsafely, depending on the design and whether it is an enterprise drive with sufficient capacitors), but you can do the same with SRAM vs. DRAM and it doesn't make DRAM as fast as SRAM, or registers-vs-SRAM, likewise.