Is memory group dual channel good? Can I use four dual channel memory?

Dual-channel performance is about 5% better than single-channel.

The difference is barely noticeable in actual use.

In terms of the current software development and the occupation of memory, it is recommended not to go up to 2GB, first a single 4G and then add 4G to activate dual channels.

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.

But there is a difference between theory and practice, in practice it can only be increased by 5%-10%, and the 512 is not much more expensive than the 256.

The 768 is generally still higher than the 512, and the dual-channel theory improves the performance by 25 only. Rich or +512.

It is not recommended to use 4 memory modules:If the motherboard only supports dual-channel memory, theoretically, there is not much difference in performance between the motherboard plugged in 4 8G memory and two 16G memory, after all, they are both 32G dual-channel memory, but in practical applications, the performance of two 16G memory is slightly higher. Therefore, to form dual-channel memory, when the memory capacity is sufficient, try to choose two memories to form dual-channel memory.

Meaning:

At present, the mainstream motherboards all support dual-channel memory, installing four memory sticks and installing two memory sticks are dual-channel memory, the memory bandwidth is the same, the motherboard plugs in four 8G memory and two 16G memory, the same capacity, the same bandwidth, so the theoretical performance difference is not big.

In the actual test, the installation of two 16G memory modules to form a 32G dual-channel memory is slightly higher than that of four 8G memory modules, mainly due to the increase in the number of memory modules, which will not increase the bandwidth of the memory, but will slightly increase the load of the CPU, resulting in a slight decrease in the performance of the CPU and memory.