Performance Analysis of Intel Core i9-7900X, Core i7-7820X and Core i7-7800X

Let’s discuss about the performance, consumption and temperatures of new Intel Core i9-7900X, Core i7-7820X and Core i7-7800X processors.

Intel Core i9 7900X

As we know these new processors are manufactured in 14 nm process and are based on the Skylake-X architecture, although they have very different specifications that we will review right now:

Core i9-7900X

  • Ten cores and twenty threads at 3.3 GHz-4.3 GHz.
  • 75 MB of L3 cache.
  • 140W TDP.

Core i7-7820X

  • Eight cores and sixteen threads at 3.6 GHz-4.3 GHz.
  • 11 MB of L3 cache.
  • 140W TDP.

Core i7-7800X

  • Six cores and twelve wires at 3.5 GHz-4 GHz.
  • 25 MB of L3 cache.
  • 140W TDP.

For comparative purposes a RYZEN 7 1700 from AMD has the following specifications:

  • Eight cores and sixteen threads at 3 GHz-3.6 GHz.
  • 16 MB of L3 cache.
  • 65W TDP.

As we can see there are no surprises, the three processors offer a very good performance but still lag behind the Core i7 7700K in games due to the lack of optimization that prevents them can take advantage of CPUs with more than four real cores.

As for consumption we have a “surprise” at the end, and is that even a Core i7 7800X consumes more power than a RYZEN 7 1800X , a chip that has 8 cores and 16 threads at 3.6 GHz-4 GHz.

The conclusion of analysis is simple, Skylake-X offers impressive performance but consumption is very high, so much that it has a clear impact on processor temperatures.

Overclocking consumption is triggered and temperatures too, so Intel was very serious about recommending liquid cooling with the new Skylake-X and Kaby Lake-X.

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