AnandTech mentioned in the Vertex 3 preview I believe that all of their in-house SandForce drives had a write amplification of about 0.6x. So assuming a write amplification of 1.1 for incompressible data (seems reasonable since that's what Intel and other good controllers without compression/dedupe can achieve), as an OS drive it can compress host writes by about 45% on average.
I think it would be far more valuable to see how well the SF controller can deal with more realistic workloads like this than completely compressible or incompressible data. But just my $0.02.![]()




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