The newest iPhones from Apple, the 15 Pro and 15 Pro Max, are the first to have 8GB RAM, giving them an advantage over the standard models, which have 6GB RAM. But via very thorough research, we also discovered that Apple actually obtained the first ‘D1’ (D1b) LPDDR5 DRAM chips from Micron.
According to the most recent information from TechInsights, the codename Y52P is used for Micron’s new D1 LPDDR5 16 Gb DRAM chip. Despite Apple’s continued use of the LPDDR5 standard from the previous year, the article points out that Micron’s new DRAM chips not only have a lower physical footprint but also have a higher density when compared to the company’s LPDDR5 and LPDDR5X D1 16 Gb die.
The new Apple iPhone 15 Pro, identified as model A3101, houses Micron’s revolutionary D1β LPDDR5 16 Gb DRAM chip, bearing the code name Y52P die.
Additionally, the new D1 LPDDR5 DRAM chips are mass-produced without utilizing an approach known as Extreme Ultraviolet Lithography (EUVL). For those who are unaware, EUVL is a method used by memory producers Samsung and SK Hynix to scale down the node of DRAM to sub-15nm. Without the requirement to include EUVL in the manufacturing process, Micron was able to mass produce D1z, D1, and now D1 DRAM chips.
EUVL use in DRAM manufacture has a tendency to result in delays, which will negatively affect supply and yield difficulties. This method can also hinder wafer output, so Micron had to optimize production for Apple given the strong demand for the iPhone 15 Pro and iPhone 15 Pro Max, which you can see it did. It is particularly noteworthy that this D1 LPDDR5 DRAM technology can produce 51.2GB/s of bandwidth while being lower in size. We eagerly anticipate what will be available in the coming year.
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