Quote Originally Posted by Timur View Post
You are missing the point here. We were discussing compression *ratio* and how we could come up with reasonable numbers. My statement was that 10% seems a bit little for *compressible* data.
No, I got the point. You seem confused. You do realize that 10% means compressed from 100% to 10%, right? We are talking about compression FACTORS. 10% means a factor of 10 compression.

If the Sandforce SSD's maximum sustained host write speed is 500MB/s (for example, when fed a stream of zeros), but the flash sustained write speed is only 90MB/s (for example, for a 60GB V3), then the compression factor is at least 5.6, or 18%. It could be 10%, but we cannot say for certain using the throughput ratio method.

But it is moot anyway, since Ao1 already measured it for a V2. IIRC, he got something like 8 - 12% or so for zero-fill.