Benchmarks like these are coming in from all over the place, proving that Lion’s FileVault does not cause a significant bottleneck to your system’s performance. In fact, it’s likely you won’t even notice that it’s on. The truth is, the benefits of Lion’s disk encryption far outweigh the nearly insignificant drawbacks, especially if you’re talking about a new laptop with an SSD in it.

MacBook Air SSD Benchmarks: 2010 vs 2011 vs Lion Encryption