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Intel Core i9-7900X ‘Skylake-X’ 10C20T CPU Indepth Analysis

7-Zip

7-Zip is an open source Windows utility for manipulating archives. We measure the Total Rating performance using the built-in benchmark tool. The test stresses all CPU cores to 100% and shows an affinity for memory bandwidth.

Mozilla Kraken

Mozilla Kraken is a browser-based JavaScript benchmark that tests a variety of real-world use cases. We use Chrome as the test browser. The test exhibits very little multi-threading and shows an affinity for CPU clock speed and IPC.

Sandra Memory Bandwidth

Overview:

The multi-threaded 7-Zip test continues to show the i9-7900X as a performance powerhouse. Performance increases over a 6950X are 14% at stock and 9% when overclocked. Compared to Ryzen 7 1800X, the 7900X is 42% quicker at stock and 50% better when both chips are overclocked. If you have workloads which demand a sizeable amount of file archival, the i9-7900X is a smart choice.

Mozilla Kraken is displaying surprising results given its preference for IPC and clock speed more than cores. The 7900X puts in a good showing thanks to its Skylake architecture and fast lightly-threaded boost clocks of 4.3GHz or 4.5GHz.

Memory bandwidth is past 50GBps for the quad-channel DDR4 solutions and Skylake-X is no exception. There seems to be an early bug with this test as the bandwidth for our Core i9-7900X system with 3200MHz C14 G.SKILL DDR4 should be closer to the i7-6950X result of 60GBps. A BIOS or software update should fix this as we see no reason why memory bandwidth should be reduced compared to Broadwell-E. All-out memory bandwidth is an area where Intel’s quad-channel HEDT platform has a clear advantage over dual-channel Ryzen competition.

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