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Hello everyone, in this lesson we will talk about the principle of video memory replacement

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and the identification of video memory parameters

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The principle of video memory replacement is very simple. For novices, the original model can be replaced.

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The code name of the video memory we mentioned in the last lesson is the model of the video memory

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Novices only need to buy the same type of video memory and come back to replace it.

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For veterans, you can use memory with the same capacity and frequency not lower than the original value to replace

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The most basic principle of video memory replacement is that

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the capacity is consistent and the frequency is not lower than the original value.

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Only in line with this principle, the video memory can try to replace

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For example, you can try to use a Samsung video memory with a capacity of 1G and a slightly higher frequency

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to replace a Hynix video memory with a capacity of 1G and a slightly lower frequency.

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However, in line with this principle, it is not necessarily possible to replace

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There may be various compatibility issues between them, we need to try different graphics cards

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Different video memory may have different situations

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However, during the maintenance process, we found that the compatibility of Samsung

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and Hynix will be better when the video memory is replaced.

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To replace the video memory, in addition to knowing the code name of this video memory,

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we also need to know the capacity and frequency of this video memory.

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In fact, the capacity and frequency of a video memory can be found out by the code name of the video memory.

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For example, Samsung's video memory, we can go directly to Samsung's official website

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In the search interface of the official website, directly enter the model of the video memory

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The model of this video memory is K4G80325FC

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After entering the memory model, we can search to find the parameters of the memory

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It can be seen that the capacity of this video memory is 8Gb, and it is a small b

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Converted to 1GB

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Then the capacity of this video memory is 1GB

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The speed of video memory can be seen here

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This is fine as long as it is not lower than the original value.

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Let's take a look at Micron's code name recognition

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Similarly, we open this website and enter the silk screen of the video memory in FBGA, which is D9WCW

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After searching, you can see that the real model of this video memory is this string

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We click and we can see that its capacity is also 8Gb

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Converted into commonly used units, that is, the capacity of a single chip is 1GB

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For the speed of video memory, we need to open its data sheet here

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As you can see, this page has the code identification of video memory

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This column represents the speed of the video memory

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There are three options, 12, 14 and 16

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12 represents 12Gb per second

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14 represents 14Gb per second

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16 represents 16Gb per second

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Let's take a look at the video memory just now, how much is it here?

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As you can see, this video memory is -14 here

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Then the speed of this video memory is 14Gb/S, and the capacity is a single 1GB

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Let's look at the identification of Hynix particles next

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It's a pity that Hynix granules can't find the corresponding query location on the official website

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We can only interpret the Hynix code through the internal chip manual of Xinzhi Manufacturing

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It should be noted that there are a total of 3 Hynix code tables

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We need to correspond to different codes and choose different code tables

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However, Elpida's video memory is a pity.

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At present, there is no official channel to find out its code meaning.