You'll notice that the After Torture number is better than the 120GB Vertex 3. To simulate this I filled the drive with incompressible data, ran a 4KB (100% LBA space, QD32) random write test with incompressible data for 20 minutes, and then ran AS-SSD (another incompressible data test) to see how low performance could get: OWC Mercury Extreme Pro 6G 120GB - Resiliency - AS SSD Sequential Write Speed - 6Gbps tons of compressed images, videos and music) you can back the controller into a corner. However if subjected to a workload composed entirely of incompressible writes (e.g. My personal SF-1200 drive had a write amplification of around 0.6 after several months of use. In practice, SandForce based drives running a desktop workload do very well and typically boast an average write amplification below 1 (more writes to the device than actual writes to NAND).
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