What are channels of memory and what does the number of channels of memory mean?

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.

In these two memory, the CPU can address and read data separately, 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".

You notice that the main frequency is not, and the main frequency should add up to your memory frequency. Generally, the current memory uses dual channels to improve efficiency, and the general DDR2 800Hz memory will display, and the data of two 400 is divided into two channels.

If the data is regarded as a courier package, then a memory channel is equivalent to a courier to move the goods.

And if the package can be reasonably "decomposed" into several parts, then a boring channel can be picked up by different couriers. For example, a bundle of books can be unpacked into different upper, middle and lower volumes and carried separately.

Theoretically, one more channel can be nearly doubled in speed (doubling the bandwidth).

In reality, many packages cannot be easily "broken down" logically, and can only be picked up one by one. Therefore, compared with single-channel, dual-channel is indeed improved, and some scenarios are significant, but it is not a complete doubling.

The more channels there are, the more latency can be an issue.

4 channels means that the motherboard's memory slots support 4 memory slots and have 4 DIMM slots.

DDR4 provides a lower supply voltage than DDR3 DDR2 (good energy saving, which is good for the battery life and temperature control of mobile devices) and higher bandwidth, but due to the inconsistency of many designs such as voltage standards and physical interfaces with DDR3, DDR4 is the same as the previous generation DDR3 DDR2 DDR.

In terms of specifications, the starting frequency of DDR3 memory is 800MHz, and the maximum frequency reaches 213MHz3, while the starting frequency of DDR4 memory reaches 213MHz3, and the maximum frequency of mass production products reaches 3000MHz.

The following channel refers to the motherboard's memory slot, which supports 4 memory slots and has 4 DIMM slots.

2. At present, general motherboards are designed with 4-channel memory, and a single memory is 8G, which can be expanded to 32GB.

It depends on your use, and there is no need for 4 channels for general household use. 4 channels require 4 identical memories (at least 2 groups, each with the same 2 memories). Most of today's motherboards support 4 channels (all with 4 memory slots).

Your DDR3 1600MHz 2x4G Corsair cover is more than enough. There is also win732-bit memory that can only be used in one word. To use up 8G memory, you have to install win764 bits.

Quad channel is dual channel, dual channel to the same brand of the same memory, but there are also incompatibilities.

I don't know upstairs, don't talk nonsense, four-channel memory is currently only supported by the x79 platform, but the cheapest ones in this set are about seven or eight thousand. I just got a set and it cost more than 10,000.

Dual-channel memory can improve the performance of the whole system, but not every machine supports it, and dual-channel requires the motherboard to support 2 identical memories to facilitate the formation of a synchronized system.

Dual-channel memory technology is actually a memory control and management technology that relies on the chipset's memory controller to function, theoretically doubling the bandwidth provided by two memory of the same specification. It's not a new technology, it's been used in server and workstation systems for a long time, and it's only come to the foreground of desktop motherboard technology to solve the increasingly embarrassing memory bandwidth bottleneck of desktops.

A few years ago, Intel Corporation had launched the i820 chipset that supports dual-channel memory transfer technology, which formed a pair of ** partners with RDRAM memory, and its outstanding performance made it the biggest highlight of the market for a while, but the defect of excessive production cost caused a situation that was not popular, and was finally eliminated by the market. and finch.

Since Ingvo Pizauter has given up support for RDRAM, the current dual-channel memory technology of mainstream chipsets refers to dual-channel DDR memory technology, and the mainstream dual-channel memory platform Intel is Intel series, while AMD is NVIDIA NFORCE2 series.