I feel like this would be easy to test, at some cost. Buy N SSDs from X manufacturers. Fill the entire disk with random bits (/dev/urandom), read it back and co

I feel like this would be easy to test, at some cost. Buy N SSDs from X manufacturers. Fill the entire disk with random bits (/dev/urandom), read it back and compute a hash. Wait A, B, C, and D durations. After each duration, read the drives again and compare the hash.