Apple is not kind! Thousands of pieces of iphone7 flash was

Apple is not kind! Thousands of pieces of iPhone7 flash was tricky recently, according to the iFixit iPhone7 Plus they found in the dismantling, the machine uses a number of Toshiba THGBX6T0T8LLFXF flash memory (NAND) chip, and this chip is TLC chip. This means that the 128GB and 256GB capacity version of iPhone 7 may use a TLC flash. It should be noted that some of the past iPhone 6 mobile phone 64GB and 128GB version also uses a TLC flash. IPhone7 do not understand the solid-state hard disk friends, may not know what is the TLC flash. The hard disk is made up of flash memory, TLC is a kind of flash memory. TLC, which is the abbreviation of Triple-Level Cell, is a manufacturing technology of flash memory, compared to SLC flash memory storage unit can only save 1bit data, MLC flash memory cell can be saved 2bit, TLC can save 3bit. TLC utilizes the charge of different potentials, a floating gate to store 3 bit information, and the storage density theoretically increases by a factor of 0.5 compared to the MLC flash memory. Some people may say that this is not a question of how much integration? This is not the truth. The number of transistors per unit of SLC, MLC, and SLC is similar, that is to say, we store more information about what is physically similar. But storing more information means more instability. But TLC manufacturing costs are relatively low, only 50% of MLC flash, but the service life and reading and writing speed is much lower than MLC. Some people think that this is a very bad Apple Corp, China iPhone 7 32GB capacity and 128GB capacity of 800 yuan, an increase of only 96GB capacity. And now the most expensive use of PCI-E interface 128GB MLC solid state drive will be about 500 yuan. The size of Apple Corp to enhance product premium is not good, but if because of the TLC flash particles suspected of hard life, need not. In the case of 128GB, 1000 times / is 128*1000=128000GB, if you write every day a year is 20GB, 365*20=7300GB, 1280007300 – 17.5. In other words, you have to use 20GB 17 years to reach the design life. If iphone7 can be used for 17 years, you should worry about the motherboard can not hold so long, rather than hard disk. (source: 3DM editor: WB) Sina statement: posted this article for more information to pass, does not mean that agree with their views or confirm the description.相关的主题文章: