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Hello everyone, in this lesson i'm going to introduce the memory on the Apple mainboard

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The memory on an Apple mainboard is the same as the memory on a regular machine

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It's called DRAM, it stands for dynamic random access memory

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It is not the same as ROM, ROM is read-only memory,

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there is data inside the ROM, data will not be lost after power is off

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DRAM, on the other hand, is dynamic random access memory,

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which loses all data stored in it after the power is off

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There are three types of DRAM in Apple computers

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The first is a pluggable memory chip, identical to the one on a regular machine and interchangeable

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The second is memory that is welded to the mainboard, which we call onboard memory

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The third is memory on top of the M1 processor

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For these 3 kinds of memories, there is no doubt that

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the first kind of pluggable memory replacement and upgrade is more convenient

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This kind of onboard memory, replacement, upgrade will be more difficult,

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need to have a certain welding technology

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This memory, which is packaged on the back of the CPU,

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cannot be replaced, it only can be replaced with the CPU

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Whether it's pluggable memory, onboard memory, or the memory carried on the CPU

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They are managed by the CPU through the memory bus and communicate with the CPU through the memory bus

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If the memory is damaged, it cannot be displayed

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This kind of memory chip, we call it a memory particle

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For example, if any one of the eight particles is damaged, it will not display

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We must ensure that all memory particles are normal for the laptop to run properly

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Ok, this is the introduction to the memory in the Apple mainboard