Photoshop CS5 diglloydMedium Benchmark
This test uses the diglloydMedium benchmark.
The diglloydMedium test requires about 16GB of real memory for Photoshop to work efficiently, so it becomes disk-intensive when a MacBook Pro has only 8GB of memory installed.
The OWC Mercury Extreme Pro 240GB 6G SSD outperforms all the other SSDs here, including the OWC 6G 120GB model. One wonders how the 480GB model might perform, or whether a firmware update might improve the 120GB model.