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Old 10-10-2010, 11:40 PM  
borked
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OK, on a database hash of 10,315 images, I took a dataset of 281 images and asked to find the matches - it took 38.52 seconds. The vast majority of that time (36.53 secs) was taken up by creating the hashes of the 281 images (which was expected)

That's 2,898,515 hash-against-hash calculations in 2.01 seconds (5.19 billion calculations per hour).
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