AIDA64 Memory Bandwidth and Cache Performance

We are now going to utilize AIDA64’s Cache & Memory Benchmark to look at memory bandwidth as well as memory and L1, L2, and L3 cache latencies. The RAM is the same between all systems, running at 3600MHz with CL16 timings.

Memory Read

Intel Core i5-12600K DDR4 Alder Lake AIDA64 Memory Read

The AMD Ryzen 5 5600X platform and Intel Core i5-11600K platforms are rather close, around 52-53GB/s of memory read bandwidth. The new Intel Core i5-12600K platform is, however, faster than both offering 56 almost 57GB/s of bandwidth, up by 6% generation-to-generation.

Intel Core i5-12600K DDR4 Alder Lake AIDA63 Memory  Write

Memory write performance is also at 56GB/s on the 12600K, which is a 9% improvement generation-to-generation. The Ryzen 5 5600X is running normally, due to the way its CCD/CCX complexes are arranged, write performance is always cut in half from read performance. All of this is with the same DDR4 memory kit, so even with DDR4 memory, the newer Intel i5-12600K platform is faster in regards to memory bandwidth.

AIDA64 Cache & Memory Benchmark

We now want to show you the complete AIDA64 Cache & Memory Benchmark so you can also see the latencies, importantly the L3 cache latency which was an issue in the past on Windows 11 with the Ryzen CPUs. Let’s see if it has truly been fixed.


Intel Core i5-12600K DDR4 Alder Lake AIDA64 Cache & Memory Benchmark

Here is the Intel Core i5-12600K above, you can see the memory latency is 76ns, L1 and L2 cache latencies are very small, and L3 cache latency is 17ns. The L3 cache performance is around 694GB/s read and 327GB/s write.


Intel Core i5-11600K AIDA64 Cache & Memory Benchmark

The Intel Core i5-11600K information is above, and as you can see the memory latency is actually lower on the 11600K at just 50ns. We also find the L3 cache latency to be lower on the 11600K. However, the L3 cache performance is a lot lower at 271GB/s read and 205GB/s write. Therefore the 12600K has much better L3 cache performance overall.


AMD Ryzen 5 5600X AIDA64 Cache & Memory Benchmark

Here are the results from the Ryzen 5 5600X above. The first thing to notice is that the L3 cache latency issue has been fixed, it’s just 12ns here, which is actually lower than the i5-12600K’s latency! The memory latency is closer to the 12600K’s but still slightly lower. In terms of latency then, the 5600X is actually overall better than the 12600K. But in terms of L3 cache bandwidth, the 12600K does have a leg up in read performance, the 5600X operates around 362GB/s read, and 322GB/s write. It has a similar write performance, but lower read performance than the 12600K.

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Brent Justice

Brent Justice has been reviewing computer components for 20+ years, educated in the art and method of the computer hardware review he brings experience, knowledge, and hands-on testing with a gamer oriented...

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  1. Good review. Have to say I was surprised at the results. Nice to see Intel back in the hunt, and that power draw wasn’t off the charts

    Would love to see a short follow on that pits Pcores vs Ecores just out of curiousity.

  2. Nice review indeed! I am pleasantly surprised by the results. Keep up the improvements Intel. Things get good when both AMD and Intel are competetive.

  3. Thanks for the review [USER=3]@Brent_Justice[/USER]. I really enjoyed the informative breakdown of what Alder Lake, E core, P core is along with the heads up about the AMD updates. I also enjoyed seeing Intel coming back swinging with an impressively efficient processor than perform well with a multitude of workloads.

    edit: Also loved the use of arrows in the review pic to indicate the DDR4 detail. At first I was like, what?, huh?, oh I get it.

  4. I admit a follow up with various Intel specific features turned on to see what further gains could be had would be nice as well.

  5. Nicely done on the review.

    I wonder. Will Intel have an advantage in place if running an Intel processor with an Intel Arc?

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