17999的iPhone用了“更差”的闪存，但我觉得这是好事

Core Viewpoint - The new iPhone 17 Pro Max features a top configuration with a staggering price of 17,999 RMB for the 2TB version, making it the most expensive iPhone ever, with a 4,000 RMB premium for the additional 1TB of storage compared to the 1TB version priced at 13,999 RMB [2][3]. Pricing and Storage - The iPhone 17 Pro Max's 2TB model is priced at 17,999 RMB, which is significantly higher than the 1TB model at 13,999 RMB, indicating a steep price increase for additional storage [2]. - The additional 1TB of storage in the 2TB model costs 4,000 RMB, raising questions about the value proposition given the cost of alternative storage solutions [2]. Technology and Specifications - The 2TB version likely utilizes QLC (Quad-Level Cell) NAND flash memory, which has raised concerns among users due to its lower performance and lifespan compared to other types of NAND flash [3][6]. - Apple has achieved a "world first" by using a single 2TB QLC flash chip instead of combining multiple lower-capacity chips, which is a departure from the practices of other manufacturers [6]. NAND Flash Memory Types - NAND flash memory types include SLC (Single-Level Cell), MLC (Multi-Level Cell), TLC (Triple-Level Cell), and QLC, with QLC being the least durable and slower due to its higher data density [8][12]. - QLC can store 4 bits of data per cell, which reduces costs but also leads to lower performance and lifespan, with QLC having a write endurance of only 1,000 cycles compared to SLC's 100,000 cycles [20][21]. Performance Considerations - Despite concerns about QLC's lifespan, calculations suggest that a 2TB QLC drive could theoretically last up to 30 years under typical usage conditions, as the total data written can be substantial [26][27]. - The use of SLC caching is a common method to mitigate the slower speeds of QLC, allowing for faster write operations by temporarily using part of the QLC storage as SLC [34][41]. Market Implications - The integration of QLC technology in smartphones may lead to more affordable options for consumers in the future as supply chains mature, potentially allowing for larger storage capacities at lower prices [45].