Question 1. There are two differences:
①The frequency is different.
②The bandwidth is different.
③The speed is different.
Question 2. The specific difference is that compared with 1333 memory, the frequency of 1600 memory is 267MHz higher, the bandwidth is 20% more, and the speed is about 8% faster.
Extended information:
Memory is one of the important components in the computer. It is a bridge for communication with the CPU. All programs in the computer run in the memory, so the performance of the memory has a great impact on the computer. Memory, also known as internal memory, is used to temporarily store calculation data in the CPU and exchange data with external memories such as hard disks.
As long as the computer is running, the CPU will transfer the data that needs to be calculated into the memory for calculation. When the calculation is completed, the CPU will send the results out. The operation of the memory also determines the stable operation of the computer. Memory is composed of memory chips, circuit boards, golden fingers and other parts.
The main frequency of the memory is the same as the main frequency of the CPU. It is customarily used to indicate the speed of the memory. It represents the highest operating frequency that the memory can achieve. Memory clock speed is measured in MHz (megahertz). The higher the memory frequency, to a certain extent, the faster the memory can achieve. The main frequency of the memory determines the highest frequency at which the memory can work normally.
Currently the more mainstream memory frequencies are 1600MHz and 2400MHz DDR memory, 667MHz, 800MHz and 1066MHz DDR2 memory, 1066MHz, 1333MHz, 1600MHz DDR3 memory, 2133MHz, 2400MHz, 2666MHz, 2800MHz, 3000MHz, 3200MHz DDR4 memory.
Reference materials:
Baidu Encyclopedia-Memory
Baidu Encyclopedia-Memory Frequency
1333 and 1600 represent the memory frequency. The higher the frequency, the faster the memory operation speed, the better the memory, and the higher the price. 1600 is greater than 1333, which means that the memory operation speed of 1600 is faster than that of 1333.
1. Differences in working modes
There are differences between the two. Nowadays, many scoring software are used to evaluate and find that the performance scores of the two working modes are the same. Even if they are adjusted to 1000, the scores still the same.
2. CL latency difference
CL response time is another indicator of memory. CL is the abbreviation of CASLatency, which refers to the delay time required for memory to access data. Simply put, it is the response speed of memory after receiving instructions from the CPU. The general parameter values are 2 and 3. The smaller the number, the shorter the reaction time. In the early PC133 memory standard, this value was stipulated as 3. However, in the new specification formulated by Intel, it is mandatory that the response time of CL must be 2. This will, to a certain extent, affect the chip and PCB assembly processes of memory manufacturers. The requirements are relatively high, and at the same time, better quality is guaranteed
. Therefore, this is a factor that cannot be ignored when purchasing brand memory. There is another explanation: memory latency can basically be explained as the time the system waits for memory response before entering the ready state for data access operations
3. Appearance comparison
Front-side comparison of ADATA 4GBDDR3-1600 and 4GBDDR3-1333 memory
Back-side comparison of ADATA 4GBDDR3-1600 and 4GBDDR3-1333 memory
Frontal comparison of ADATA 4GBDDR3-1600 and 4GBDDR3-1333 memory
Backside comparison of ADATA 4GBDDR3-1600 and 4GBDDR3-1333 memory
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Close-ups of the front and back of Kingston’s 4GBDDR3-1600 memory
We found through comparison that there are at least three brands of 4GBDDR3-1333 and 4GBDDR3-1600 memory The appearance of the board is exactly the same. Through comparison, we can find that the 4GBDDR3-1600 and 4GBDDR3-1333 memory of the three brands mentioned above are exactly the same in terms of the memory PCB board, the number and placement of related electrical components, the size of the memory chip, etc.
Summary: The editor believes that sufficient memory is king. For ordinary users, the current mainstream DDR31333 memory is completely sufficient, and there is no need to spend more money to pursue high frequencies. In addition, the overall performance of the memory also depends on the quality and particle performance of the product. Overclocking will have an impact on the stability of the entire platform. For ordinary users, do not try it easily, otherwise it will not be worth the loss if there is no obvious improvement or the configuration is damaged. Through testing, we can find that when the frequency of the same memory is increased from 1333 to 1600, although all aspects of data are improved, these subtle realizations are difficult to realize during use. At present, the mainstream 1333 has exceeded 100. Choosing 1333 frequency memory is more affordable for ordinary users.
For memory modules of the same specification and level, the frequency difference between 1333MHz and 1600MHz has only a difference of 1~3 on the data reading and writing performance. %within.
1. For memories of the same generation and different frequencies, the "timing" parameters of high-frequency strips will be higher than those of low-frequency strips. For example, for DDR31333 memory, the timing parameters are usually 9-9-9-24CR1; while for DDR31600MHz memory, the timing parameters are mostly 11-11-11-28CR2;
2, but this is not absolute. Even memory modules of the same generation and brand can be divided into general, mainstream and flagship products to meet the needs of different users. Those high-end strips graded according to physical characteristics, such as DDR31600 products, also have high-quality products with timing parameters of 9-9-9-11CR1, or DDR31866 timing 9-10-9-27CR2;
3. Use the AIDA64Etreme tool, Comparison of the reading and writing results of the two types of memory in the actual test:
① Comparison of the "reading speed" results of the dual-channel mode, the reading speed of 1600 memory is only 0.8% higher than that of 1333 memory;
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② Comparing the "writing speed" results, the performance is improved by about 3%;
4. Comparing the test results, it can be clarified that the slight increase in memory frequency is. The improvement in data reading and writing performance is not large, far less than the increase in CPU frequency, but has an obvious effect on improving the performance of the entire machine.
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