Geekbench 3 actually has a Trial Mode .You don't necessarily need a license key to run basic benchmarks. The trial mode allows you to run the 32-bit benchmarks and upload your results to the Geekbench Browser. While the Pro features (like 64-bit benchmarks and portable use) are locked, the core functionality is there for free, legally. Better Alternatives
: Simply download and run the installer from official sources like the Primate Labs Blog. geekbench 3 license key free