Intel Alder Lake processors (Intel Core 12) support both DDR4 and DDR5 memory for a comparison of performance. Actually, the source did just that compared the test results of the Kingston DDR4-3200 and Micron DDR5-4800 memory, which was used with the Core i9-12900 and i9-12900K processors. All data are summarized in the table below, DDR5 results are in bold.
As you can see, in the single-threaded test, the results for DDR4 and DDR5 are almost the same. In a multi-threaded test, DDR4 outperforms DDR5 in reading and writing tests by about 20%, but in a mixed test, DDR5 is already ahead, albeit not much. But DDR5 provides noticeably lower data access latency: 87 ms versus 136 ms.
The source notes that due to the fact that Alder Lake has not been finalized, no definitive conclusions can be drawn from this data yet, however, apparently, DDR5-4800 memory will provide approximately the same performance as the current popular DDR4 kits. A great performance can be expected from DDR5-6400 and, in the future, from DDR5-8400, but these kits will be significantly more expensive. In the meantime, we can say that the transition from DDR4 to DDR5 will not provide any tangible advantage.
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