Intel’s $115 Core i3-530 doesn't include Turbo Boost technology and it doesn't boast hardware-based AES-NI, but it overclocks like a fiend. We benchmarked this dual-core, HT-equipped chip at 4.4 GHz and determined the most power-efficient overclock.
Benchmark Results: PCMark And 3DMark Vantage
Clearly, the high overclocks show their effects. Keep in mind that graphics performance is also included, which explains the Core i5-661's relative strength.