Intel Core i9-11900K CPU Review

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AIDA64 CPU and Memory

Memory Read

Intel Core i9-11900K CPU Review Aida64 Memory Read

Using AIDA64 to test memory read performance we find that all the CPUs pretty much perform the same.  The memory is running at the same frequency and timings, so around 48GB/s is the average.  The 5800X was a little slower for some reason, but still within a margin of error.  Testing was consistent.  There really are no surprises here on memory read, the new Intel CPUs don’t do anything magical to memory bandwidth, that will come from overclocking RAM.

Memory Write

Intel Core i9-11900K CPU Review Aida64 Memory Write

The memory write performance also seems on par here, 48-49GB/s of memory write performance.  The Ryzen 7 5800X result is completely normal here.  The reason why it has a much lower memory write is down to the CCD/IOD link operation and bytes per cycle on the 5800X.  The same was true for the 3700X and 2700X.  The important part here is that the new Intel CPUs write memory the same as the AMD platform in performance.

CPU Queen

Intel Core i9-11900K CPU Review Aida64 CPU Queen

The CPU Queen test is an integer benchmark that focuses on branch prediction and misprediction penalties.  It is multi-threading aware.  According to this test, the AMD CPUs are doing very well here.  Turning on Adaptive Boost does help performance by 5%, but it is not enough to reach Ryzen 7 5800X performance.  Without Adaptive Boost, the two are quite far in performance.  The i9-10900K is faster due to more cores, and then the Ryzen 9 5900X is the fastest thanks to its threads.  The 5900X is 29% faster than the i9-11900K with A.B. enabled. 

SHA3

Intel Core i9-11900K CPU Review Aida64 CPU SHA3

Now the new SHA3 test is very interesting and shows the advantage new instruction sets can make.  The SHA3 test is a SHA3-512 cryptographic hash benchmark.  It’s a 64-bit multi-threaded hash benchmark utilizing AVX, AVX2, AVX-512, BMI2, and XOP optimizations. 

You can really see the new Intel Core i9-11900K take off in performance since it supports AVX-512.  The instruction set is making up for the loss in core count and it’s able to beat the Ryzen 9 5900X even though the 5900X has 4 more cores and 8 more threads.  The Ryzen 7 5800X sits on the bottom here, outpaced by either the higher core count CPUs or the new Core i9-11900K with its instruction sets. 

This benchmark shows that under specific circumstances, sometimes supporting something special can make a big difference regardless of cores.

Brent Justicehttps://www.thefpsreview.com
Former managing editor of GPUs at HardOCP for 18 years, Brent Justice has been reviewing computer components since the late 90s, educated in the art and method of the computer hardware review, he brings experience, knowledge, and hands-on testing with a gamer-oriented and hardware enthusiast perspective. You can follow him on Twitter - @Brent_Justice You can sub to his YouTube channel - Justice Gaming https://www.youtube.com/c/JusticeGamingChannel You can check out his computer builds on KIT - @BrentJustice https://kit.co/BrentJustice

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