Intel Xeon E5-649 vs Intel Xeon X5687

Xeon E5-649 vs Xeon X5687 specs and performance

Our benchmark analysis concludes that the Xeon E5-649 performs better than the Xeon X5687. Despite this, the Xeon X5687 has the advantage in our gaming benchmark.

When comparing core counts for these CPUs, we notice that the Xeon E5-649 has significantly more cores with 6 cores compared to the Xeon X5687 that has 4 cores. It also has more threads than the Xeon X5687. Our comparison shows that the Xeon X5687 has a slightly higher clock speed compared to the Xeon E5-649. Also, the Xeon X5687 has a slightly higher turbo speed. A Xeon E5-649 CPU outputs less heat than a Xeon X5687 CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The cache sizes of these CPUs are different. Indeed, the Xeon E5-649 has significantly more L2 cache than the Xeon X5687. However, both these chips have the same amount of 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. For instance, the Xeon E5-649 has the same number of threads as cores. This means the the CPU does not support hyperthreading.