Intel Core i5 2400S
The LAME results were similar to the FFmpeg results due to being single threaded and being bound by clock speed.
7-Zip is fairly well optimized for multi-core CPUs and sees a nice boost from the Core i5 2400S over the Core i3 models.
Most of NASA's NAS Parallel Benchmarks are multi-core happy in Fortran using OpenMP and scale well using the Core i5 2400S, but obviously the Core i5 2500K eats the cake.