> but I cannot understand how those do 2000MB/sec no problem, but cheaper drives struggle with 100MB/sec. No DRAM cache and less flash chips, means less throug

> but I cannot understand how those do 2000MB/sec no problem, but cheaper drives struggle with 100MB/sec. No DRAM cache and less flash chips, means less throughput. All these cheap SSDs I've tested only have one physical flash chip. High-performing SSDs often spread their capacity over multiple chips so they can leverage the individual chip bandwidth and thus have more throughput. But there are likely much more factors that I'm not familiar with.