双通道内存和组建双通道内存的注意事项（Considerations for dual channel memory and building dual channel memory）

双通道内存和组建双通道内存的注意事项（Considerations for dual channel memory and building dual channel memory） 双通道内存和组建双通道内存的注意事项(Considerations for dual channel memory and building dual channel memory) Speaking of double channel, we must not be strangers. Remember that the 865/875 chips of nForce2 and Intel came out in nVIDIA, but the term "dual channel" was gradually accepted by users and became the mainstream of the market. So what is a dual channel? The dual channel is the design of two memory controllers in the Beiqiao chip level. These two memory controllers operate independently of each other, each controller controlling a memory channel. In these two memory accesses, CPU can separately address and read data, thus doubling the memory bandwidth, and the data access speed is theoretically doubled. As memory prices continue to decline, more and more people in the machine is the first choice to buy two memory to form a dual channel mode, but for some novice, how the components they become a big problem. Although it's a very easy job to build dual channels, it's also technical. Well, the following I will bring everyone together to understand. The arrangement of memory slots for dual channel boards Support double channel motherboard memory sink For the current mainstream chipset, the basic can be fully supported dual channel technology, and divided into two groups of design, color 22 the same. In general, a double channel can be implemented as long as the user inserts two memory into two memory slots of the same color. But there are always exceptions, such as some motherboard manufacturers used a color slot to represent the A channel and another color with an B channel, then we must open the manual to confirm, but the general principle is that the method of "interlaced insert". ? the choice of a two channel platform For AMD and Intel two platforms, the formation of dual channel is still a certain difference. Inetl, because the chip group is too many reasons, such as 965, 975, P35, X38 and so on, for memory compatibility is not unified, so in the formation of double channel encountered more problems. And when CPU accesses memory, you must go through the Beiqiao chip first, so that the delay will become longer and the bandwidth is not big enough, then when you set up a dual channel, you will feel the system performance has improved significantly. Double channel how to choose? For the AMD platform, because the memory controller has been integrated into the CPU, so the significance of the dual channel is not very large. Therefore, the memory performance of AMD is not very dependent on dual channels, and its performance has reached a high level of performance. On the contrary, Intel's dependence on dual channels will be much greater. For the current installed users, the direct purchase of two brands, with the specifications of memory, generally can be directly set up double channel, without manual adjustment of any option, as long as the slot inserted to the right. And because the memory production technology is more advanced, memory in the factory before each memory for SPD detection, so in the formation of double channel, the probability of success doubled. At present, the user is concerned with the double channel model to set up DDR2-800 memory or DDR2-667 memory, for this question I suggest or buy DDR2-800 memory is appropriate, now the specifications of the price has fallen below 150 yuan mark, the price highlights. How old users re build dual channel platform? For older users, the biggest problem is whether the original memory can continue to be used. As we mentioned above, for the previous Intel 865/875 motherboards, you must use exactly the same memory to be able to double channel successfully. So the memory requirement of Intel is obviously higher than that of nVIDIA. For example, a user purchased two years ago at the computer, then the memory of KINGBOX 1GB/400 (05 16 weeks), then such a cheap price and buy the same brand of the same type 1GB/400 memory (06 01 weeks), when the home is seen in CPU-Z in two there have some deviations in SPD, the same frequency CAS# latency and cycle are not the same, the memory can only be run in 333MHz. Visible, even with the same brand, the same frequency of memory may not be able to form dual channel memory, mainly to see whether the memory at the factory SPD is consistent. Solution: for some DIY master, can be accomplished through the brush SPD, working frequency, it can change the memory manufacturer name and parameters, but I do not recommend the ordinary users through this method to realize the double channels, because the brush SPD there is a great risk, once the bad brush will not be restored. How to identify the success of dual channel formation? When the system has been implemented double channel, most of the motherboard will be prompted when you start the self-test, you can take a closer look. But because the self faster, see friends can choose some testing software, such as CPU-Z, in the "memory" in "channels" project, if it shows "Dual" this word, that has achieved the dual channel mode. Written in the following: now memory prices have bottomed out, especially 1GB/667 memory, the basic price remained at 125 yuan, while the 1GB/800 minimum offer is only about 130 yuan. So buy two memory form double channel is no longer a difficult task, but with the popularity of the Vista operating system, the system needs more memory capacity to become aggravated so I suggest AMD users, the direct purchase of 2GB memory, convenient after upgrading; while Intel users are buying two 1GB or two 2GB dual channel mode so, for the system performance will help to.