Please explain in detail the memory dual channel and build disk arrays

First of all, as a dual channel, it is better that the two strips are the same, otherwise the system is unstable; The second one is no problem if you have a disk array card.

Actually, you can.

The brand, like the model, is mainly for better compatibility, and there is no other influence.

RAID is a redundant array of disks, not the same thing as a two-channel memory.

RAID is the abbreviation of Redundant Arrays of Independent Disks, which means cheap redundant disk arrays in Chinese.

In fact, there are two types of disk arrays: soft RAID and hardware RAID. The soft array is through a software program and is made up of a computer.

The CPU provides operational capabilities. Since the software program is not a complete system, it can only provide the most basic RAID fault tolerant functions. Other functions such as hot spare hard drive settings, remote management, etc. are all missing. A hard array is a piece of hardware that operates independently to provide control and computing functions for the entire disk array. Does not rely on the CPU resources of the system.

Since the hard array is a complete system, all the required functions can be done. As a result, hard arrays provide better functionality and performance than soft arrays. And, if you want to make your system a disk array, a hard array is the only option. Therefore, we can see that the RAID 5 class disk arrays on the market are all hard arrays. Soft.

The array is only available for RAID 0 and RAID 1For our image towers, we definitely won't use RAID 0 or RAID 1.

As a high-performance storage system, it has been widely used. The level of RAID has developed from the introduction of the RAID concept to the present, and the levels are respectively and so on.

Laptops can't group RAID (array).

But multi-channel is definitely possible.

But to determine what works is to detect the chipset mode of the motherboard. And not to look at anything else.

How do I group dual-channel memory? Can 4G+8G be grouped?

If you have Intel's motherboard, as long as it supports dual-channel, you need two memory motherboards of the same model and capacity to automatically turn on the dual-channel function, unless your motherboard does not support dual-channel, but if you are an AMD motherboard, the dual-channel function needs to be manually turned on in the BIOS.

It's not as simple as you say, if it's a motherboard after 2005, the early products also have dual-channel, but at that time the electronic technology was limited, the initial dual-channel memory, whether it is Intel or AMD, must be two identical memory (except for the production time can be different, the difference is also a few years), and it can be connected to the same color memory slot normally, and you can open the dual-channel.

Turn on the dual channel, you can use cpu-z to view the memory, and the dual channel is turned on.

In recent years, the motherboard, the development of electronic technology, dual-channel can also be opened in a variety of forms, as long as it is not different memory particles (the current three major memory particles Samsung, Micron, Hynix), memory capacity is different (4 8G), the production time is different, the nominal working frequency is different (need to work at the same frequency), there is also a great chance to open the dual channel.

The same brand, the same model, the same frequency, to put it simply, it is the same, of course, if you think your motherboard is awesome, you can also do without this.

Yes, as long as you plug in two, the boot self-test is successful, the system can read, it is dual-channel, if the motherboard has 4 slots, you must pay attention to the same two slots, but also pay attention to the inner pure frequency, it is best to choose the same frequency, the same brand of inner pure strip, so the compatibility is better, different brands can also, the frequency is not the same, the high frequency of the one automatically reduces the frequency and the low frequency of the same.

Yes, plug in 2 for automatic identification, preferably the same model and brand.

Automatic adaptation, the best effect of the same model.

Dual-channel is the design of two memory controllers at the Northbridge (also known as MCH) chip level, which can work independently of each other, and each controller controls a memory channel.

To put it simply, if you build a dual-channel system, the speed of the computer will be faster.

In these two memories, data can be addressed and read separately by the CPU, doubling the bandwidth of the memory and doubling the speed of data access (theoretically). The popular dual-channel memory architecture is built with two 64-bit DDR memory controllers with a bandwidth of up to 128 bits. Because the two memory controllers in the dual-channel system are independent and complementary intelligent memory controllers, they can operate simultaneously with zero waiting time between them.

This complementary "nature" of the two memory controllers allows for a 50% reduction in effective wait time, doubling the bandwidth of memory. Dual-channel is a new technology used in the motherboard chipset (Athlon-64 is integrated into the CPU), and has nothing to do with the memory itself, any DDR memory can work on a motherboard that supports dual-channel technology, so there is no such thing as "memory supports dual-channel".

However, it should be noted that if there are two memory slots, you can just plug them in; If there are 4 memory slots, two memory slots of the same color should be inserted into the same color slots to form a dual channel. Just plug it in, and you don't have to do any settings in the system to be dual-channel.

The same amount of memory is a complete dual-channel. The capacity is different, it is asymmetric dual-channel, and the extra capacity of the memory with large capacity is single-channel.

It can't be understood that 2 memories are dual channels, and to tell you figuratively, a bucket of water, a funnel and two funnels go down at the same time. The composition of dual-channel computing is faster, the premise of forming dual-channel is the same brand, the same size, simple, take your memory, as long as the nameplate paper is exactly the same. Dual-channel opening.

Dual-channel refers to the parallel operation of an even number of memory strips, and dual-channel memory provides theoretically twice the bandwidth of single-channel memory, enabling faster data exchange between the CPU and memory, which in turn improves system performance.

Theoretically, it's a little faster to build a dual-channel memory system than a non-dual-channel memory system! But in fact, it depends on the frequency of your memory and the cooperation of comprehensive hardware, for example, your 800 memory is on the motherboard of 1333, which does not play a role, even if it is dual-channel.

As long as the memory is compatible with each other, just plug it in.

No, you can change it again.

When you turn it on, you can see the dual channel

Dual-channel is a new technology used in the motherboard chipset (Athlon-64 is integrated into the CPU) and has nothing to do with the memory itself, any DDR memory can work on a motherboard that supports dual-channel technology

Generally, two RAMs are installed in two slots of the same color.

However, during the insurance period, set the DDR Dual Channel Function option to "Enable" in the BIOS, and the POST screen will prompt that the Dual Channel Mode has been successfully enabled, such as "Memory Runs at Dual Channel" or "Dual Channel Mode Enabled", which means that the motherboard's dual channel mode has been enabled.

It's not that your CPU doesn't work (your CPU is okay), it's that your DDR400 memory doesn't. It's the era of DDR2 now, and I recommend plugging in one directly with 1G. Hassle-free and there won't be any incompatibilities.

Your computer can be replaced after a year. Don't worry about memory.

Adding 512 can't form a dual-pass, and the capacity of the dual-pass memory must be the same.

By the way, adding 2G of memory doesn't improve the performance of general applications.

Wouldn't it be better to sell the original one directly and buy two 1g sticks to make up 2g? More stable, different brands are prone to compatibility problems, and it is already the best on your motherboard, and the dual core can't be used.

Capacity is greater than dual channel than frequency, capacity is the most important.

And your motherboard should not have dynamic integration technology, that is, different capacities can't be doubled, and now the motherboard is automatically adjusted, and different capacity frequencies can be grouped.

That's what I'm suggesting, the performance improvement from 1G to 2G is still obvious, and it's basically useless to exceed 2G.

Assemble a double channel.

The method of copying is as follows:

The first is that the motherboard should support dual channels, and insert two memory modules of the same brand and specifications into the same color slot. Generally, dual-channel masters have four slots. After the dual-channel memory is built, the memory bit width can be doubled, that is, up to 128BT, which greatly improves the memory performance and makes the memory read and write speed faster.

It's best to buy two memory sticks packed together to form a dual channel, but it's relatively high. Dual-channel memory has very high requirements for memory modules, even if the memory modules of the same brand, the same specifications, and the same particle will be incompatible, blue screen or crash.

In general, the formation of dual-channel memory is based on the same color memory slot, and there are also interlaced ones, and in general, you can know how to build by judging the same color slots.

The last point is about how to look at the memory dual channel, in fact, this generally depends on whether the motherboard has four memory slots, most of them have 2 colors, form a dual channel (how to query the DNS server address), and insert the memory into the corresponding color.

DIMM 0 1 2 3, the same color is dual channel, if you insert 1, it will be 0, insert 2, insert 0 2, and 4 will be 0123

Generally, manufacturers will use the color as a sign for the same color memory slot group for one set of dual channels, and the same for the other group. The best parameters of each group of dual-channel memory are the same, and it is recommended that the same batch of the same manufacturer is the best!

To use an analogy, three memory modules of the same frequency are like three superhighways!

But the highway also has a top speed!!

At the same top speed, a two-lane is a combination of two highways, and a three-lane is a combination of three highways.

But no matter how you merge it, the top speed is the same!

It's just that the three-channel is wider than the two-channel, which means that the three-channel is less prone to traffic jams!!

It's still a three-way one, and a single-way one