Here is some good news and bad news for prospective iPhone 4S owners. The bad news is that the iPhone 4S has a dual-core 1GHz CPU, but its clocked to 800 Mhz. The good news is that, even with slower clock speeds, the 4S still beats the pants off the iPhone 4 and other Android smartphones.
This information comes from AnandTech which compared the iPhone 4S and other handsets using online benchmarks. The results place the iPhone 4S at the top of the mobile phone market with benchmark scores well above the iPhone 4 and other smartphone competitors like the Samsung Galaxy S2. The only comparable device is the 8.9-inch Samsung Galaxy Tab
