Intel Core i7-6700K vs Intel Xeon E5-2666 v3

Core i7-6700K vs Xeon E5-2666 v3 specs and performance

In our benchmarks, the Xeon E5-2666 v3 beats the Core i7-6700K in overall performance. Despite this, the Core i7-6700K has the advantage in our gaming benchmark.

When comparing core counts for these CPUs, we notice that the Xeon E5-2666 v3 has significantly more cores with 10 cores compared to the Core i7-6700K that has 4 cores. It also has more threads than the Core i7-6700K. With our hardware info, we find that the Core i7-6700K has a slightly higher clock speed than the Xeon E5-2666 v3. In terms of cache, the Xeon E5-2666 v3 has significantly more L2 cache when compared to the Core i7-6700K. The Xeon E5-2666 v3 also has significantly more L3 cache.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the Core i7-6700K has more threads than cores. Each physical core is split into multiple threads.