Based on this resource https://gist.github.com/hellerbarde/2843375 https://gist.github.com/hellerbarde/2843375 1MB sequential read from SSD just 4x slower than

Based on this resource https://gist.github.com/hellerbarde/2843375 https://gist.github.com/hellerbarde/2843375 1MB sequential read from SSD just 4x slower than the same read from main memory. For random reads main memory faster of course. I believe author meant some average value.