SK Hynix has recently released information as well as a roadmap, confirming the commercial production of DDR5 RAM. In November 2018, the Korean semiconductor components manufacturer announced production of the first 1Ynm 16Gb DDR5 DRAM chip under the JEDEC standard.
Currently, according to SK Hynix, the goal of DDR5 RAM is to have twice the bandwidth of current DDR4 RAM. Back in 2013 when the world moved from DDR3 to DDR4, the speed of RAM bandwidth increased by 33%, from 1600 Mbps to 2133 Mbps. With DDR5, SK Hynix wants 50% higher bandwidth per DIMM.
In the above DDR5 RAM specification sheet, SK Hynix shows the speed of RAM can range from 3200 MHz to 8400 MHz. According to JEDEC standard, DDR4 RAM is clocked from 1600 to 3200 MHz.Similarly, when DDR5 RAM is released, it is possible that 8400 MHz speed will not be reached immediately, but will have to wait for the market to start racing. to manufacture this new type of RAM to make the product more complete. If the DDR5 RAM speed is 50% higher than DDR4, initially products will have a bus at about 4800 MHz
In terms of the capacity density in each memory chip, each DRAM chip can have a maximum capacity of 64Gb, each DIMM will be 64GB! There will still be DRAM chips with capacities of 24Gb and 32Gb, a stick of RAM with those 8 chips combined will be 24GB to 48GB, which depends on the RAM manufacturer.
Currently computer hardware manufacturers all produce RAM DDR4 Dual Capacity. Likewise with motherboard manufacturers, as the Z390 chipset and several X299 main chipsets both support Dual Capacity RAM.
Among the other features that allow DDR5 to have the dream speed announced by SK Hynix, it must be mentioned that DDR5 is equipped with twice as many memory blocks (banks) than DDR4 (32 vs. 16). Second, DDR5’s burst length is twice as high as DDR4 (16 vs. 8). And thirdly, DDR4 cannot work while refresh is in progress, so during refresh timing, RAM goes to sleep, the system cannot interact. DDR5 uses the Same Bank Refresh feature, which means that any remaining active memory blocks will still be used by the computer system to process tasks.
In terms of power consumption, DDR5 uses 1.1V of electricity instead of 1.2V like DDR4. The RAM technology itself will also integrate both ECC (Error-correcting code) and ECS on the DRAM die, helping the platform towards a cost-effective cloud server.
IDC believes that DDR5 will have 22% market share by 2021 and up to 43% in 2022. Currently, AMD’s 3rd generation Genio EPYC processor chips and Intel Xeon Sapphire Rapids have both announced support. DDR5. But at the moment there is no specific plan for consumer CPUs or HEDTs to support DDR5. In 2021, AMD will introduce Zen 4 processor, Intel is Alder Lake, so it can be predicted that will start seeing gaming motherboards with DDR5 RAM in late 2021, early 2022.