当前位置：首页 > 内存 > 正文

内存条2R×8什么意思(内存条10600s是什么意思)

内存
2023-12-26 16:59:29
3695

What does this string of characters on the memory stick mean? Please explain "2gb2r×8pc3-8500s-7-10"?

2GB 2Rx8: Indicates 2G memory capacity, double-sided, with a total of 8 memory particles.
PC3-8500S: indicates DDR3, 1066MHz.
7-10: Indicates the production date, which is the Xth week of XX year.

What is the difference between 2R×8 and 1R×16?

The above answer can be reversed. My last memory 1R×16 only had four chips on one side. The replacement memory 2R×8 has double sides and a total of 16 chips. Both sets of memory are regular Samsung original memory. I asked people, 1R or 2R only means whether the memory traces are divided into one group or two groups, it has nothing to do with single and double sides. The number after the multiplication sign is related to the particles, but you should divide 64 by the number after the multiplication sign to get how many particles there are in a group. For example, 2R×8 should be 64÷8=8, so each group has 8 particles, two The set contains 16 particles in total. And 1R×16 should be 64÷16=4, that is, 4 particles in each group, 4 particles in total. The same goes for 1R×8. It is calculated as a group of 8 particles, and this 8 particles can be 8 on each side on one side or 4 on each side on both sides, regardless of the number of R's.

What is memory module 2rx8?

2rx8 indicates that the number of memory particles in memory (memory) is 16.

1rx8 indicates that the number of memory particles is 8.

2rx4 indicates that the number of memory particles in the memory is 8.

The memory calculation method is as follows:

The bit width of the CPU data bus is generally 64bit now. This bit width is called the physical Bank. Then memory 1RX4 represents a 64bit memory, and X4 represents the number of bits per memory particle.

From here we can easily know that the number of memory particles is: 64/4=16.

If it is 2rx8, the memory chips are: 64*2/8=16.

If it is 2rx4, the memory chips are: 64*2/4=8.

If it is 1rx8, the memory chips are: 64/4*2=8.

So whether it is 1RX4, 2Rx4 or 1RX8, 2Rx8, the meaning can be understood as the number of memory particles in the memory, not single-sided or double-sided memory.

Extended information

After knowing the meaning of the main digits of the memory particle encoding, it is very easy to calculate its value after getting a memory stick. capacity. For example, a Samsung DDR memory is packaged with 16 samsungk4h280838b-tcb0 particles.

The 4th and 5th digits of the particle number "28" represent that the particle is 128mbits, the 6th and 7th digits "08" represent that the particle has an 8-bit data bandwidth, so that we can calculate the capacity of the memory module It is 128mbits (megabytes) × 16 slices/8bits = 256mb (megabytes).

Note: "bit" means "digit", "b" means byte "byte", if a byte is 8 bits, divide by 8 when calculating. Regarding the calculation of memory capacity, there are two situations in the examples given in the article: one is non-ECC memory, every 8 particles with 8-bit data width can form a memory; the other is ECC memory, after every 64-bit data , an 8-bit ecc check code is also added.

Through the check code, two-digit errors in the memory data can be detected and one-digit errors can be corrected. Therefore, in the actual calculation process of capacity, the check digit is not calculated, and the actual capacity of an 18-chip memory module with ECC function is multiplied by 16. At the time of purchase, you can also use this to determine whether a memory module with 18 or 9 memory chips is an ECC memory.

Reference source: Baidu Encyclopedia-Memory Particles