Purported early benchmark test results for the iPhone 5 have appeared online, suggesting that Apple’s (AAPL) latest iPhone will be among the best-performing smartphones on the market when it launches later this week. According to the tests — which may have been performed by a reviewer testing the device for the first round of iPhone 5 reviews expected to be published on Wednesday evening — Apple’s new iPhone managed a score of 1601, more than twice that of the iPhone 4S. The iPhone 5’s score also topped Apple’s latest iPad by a huge margin, and it bested Samsung’s (005930) Galaxy S III running Android 4.0 Ice Cream Sandwich as well as Google’s (GOOG) Nexus 7 running Android 4.1 Jelly Bean, 9to5Mac notes. The Galaxy S III running Android 4.1 scored a 1781 on the test. If authentic, the benchmark test results also confirm that the A6 processor in the iPhone 5 is clocked at 1GHz and that the new iPhone includes 1GB of RAM, which BGR reported this past July.