Chinese Changsha Longsys has officially launched Longsys DDR5 memory module products (ES1), including two brand-new product prototypes, namely 1Rank x8 and 2Rank x8 standard PC Unbuffered DIMM 288PIN on-die -ECC.
It can be seen that the speed of DDR5 memory has been significantly improved compared to DDR4, and the PCB size is similar to that of DDR4. The timing of this memory is 40-40-40-77, and the VDD voltage is 1.1V.
Subsequently, Longsys tested the Longsys DDR5 32GB 6400 memory on the Intel AlderLake-S development platform. The test uses Windows 10 Professional Edition system, it can be seen that the memory frequency is 4800MHz, and the unreleased Intel 12th generation processor model cannot be displayed.
After the test of Master Lu, the platform scored 557,901 points, and the memory score was as high as 193,864 points. It is worth noting that although there is only one memory installed in the slot, it is displayed as a dual-channel in the task manager.
The official running score using AIDA64 shows that the read rate of this memory is 35844MB/s, the memory writes speed is 32613MB/s, and the copy speed is 28833MB/s. However, the memory latency is a bit high, 112.1ns that can be predicted because the firmware of Intel’s 12th generation development board is not yet mature.
Longsys also conducted a comparative test on DDR4 memory, and it can be seen that the performance of DDR5 memory has been greatly improved, and Master Lu’s memory running score has doubled.
Longsys DDR5 memory supports on-chip On-die-ECC function, 16n Prefetch mode (BL16), balanced mode DFE technology, and other features. This DDR5 memory has a built-in independent dual-channel mechanism, and a single dual-channel can be realized, which can significantly increase the operating speed.
DDR5 memory starts at 4800MHz, and higher frequencies can be achieved in the future. Intel’s 12th-generation Core platform is expected to be compatible with DDR5/DDR4 memory at the same time and is expected to be released at the end of 2021.
(Via)
