PMIC Issue with Server DDR5 RDIMMs Reported, Convergence of DDR5 Server DRAM Price Decline
April 24, 2023 | TrendForceEstimated reading time: 2 minutes
TrendForce reports that mass production of new server platforms—such as Intel Sapphire Rapids and AMD Genoa—is imminent. However, recent market reports have indicated a PMIC compatibility issue for server DDR5 RDIMMs; DRAM suppliers and PMIC vendors are working to address the problem. TrendForce believes this will have two effects: First, DRAM suppliers will temporarily procure more PMICs from Monolithic Power Systems (MPS), which supplies PMICs without any issues. Second, supply will inevitably be affected in the short term as current DDR5 server DRAM production still uses older processes, which will lead to a convergence in the price decline of DDR5 server DRAM in 2Q23—from the previously estimated 15~20% to 13~18%.
As previously mentioned, PMIC issues and the production process relying on older processes are all having a short-term impact on the supply of DDR5 server DRAM. SK hynix has gradually ramped up production and sales of 1?-nm, which, unlike 1y-nm, has yet to be fully verified by consumers. Current production processes are still being dominated by Samsung and SK hynix’s 1y-nm and Micron’s 1z-nm; 1? and 1?-nm production is projected to increase in 2H23.
TrendForce estimates that DDR5 server DRAM 32 GB prices are expected to decrease to US$80–90 during April and May, owing to lower fulfillment rates of DDR5 server DRAM in the short term. However, this price estimate is slightly higher than the previous Q2 average estimate of US$75. In contrast, DDR4 prices are projected to fall by 18–23% in 2Q23, whereas DDR5 prices are expected to drop by 13–18%. This indicates a larger quarterly price decline for DDR4 than DDR5, as the price gap between the two widens.
AI indirectly helps drive up demand, 128 GB high-capacity modules see prices stop falling in April
The explosive popularity of ChatBOT has driven up demand for AI server shipments, leading to talks about HBM and boosting purchasing power for 128 GB server DDR5 RDIMM to accommodate ChatGPT 4.0 computing architecture. This has led to an increase in demand for high-capacity RDIMMs in early 2Q23, primarily from US CSPs. TrendForce reports that 128 GB RDIMMs require Through-silicon VIA (TSV) packaging, as the DDR5 mono die is mostly 16Gb. However, main suppliers cannot increase their TSV production capacity in the short term, leading to further price increases for SK hynix’s high-capacity DDR5 modules this month. This is in contrast to the current downward trend in the prices of DDR4 and other DDR5 products.
Overall, compared to DDR4, DDR5 modules require PMIC components, which introduces the possibility of compatibility risks. In the meanwhile, clients have also been delaying the mass production of new server platform models. Even though DRAM suppliers have already been sending out samples to CPU vendors and buyers since early 2022, practical issues have only just begun to emerge as new server production ramps up. TrendForce believes that the resulting changes in the price difference between DDR4 and DDR5 will be reflected in Q2 and Q3 of this year. As the production of new products begins to ramp up, the price gap will converge.
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