Oh ? Why is that ? SSD still need to address every memory block, don't they ? Or do they have a faster DMA-like mode where you can send the instruction "give me the next 96KB starting at address X ?

SSDs exhibit the same sort of cache locality RAM does. When a region is accessed, a larger chunk is fetched and cached just in case it's needed later.

Yes, and the OS readahead also helps.

You can see the random vs sequential difference in any ssd review, eg http://thessdreview.com/our-reviews/ocz-vertex-3-240gb-max-i... shows 18 MB/s in random reads vs 500 MB/s sequential reads.