I have a Kingston DDRII 533 2 and want to add a Kingston DDRII 667 2, is it okay?

OK. However, they can only operate at DDR2 533 frequencies.

The current DDR2 667 memory is very cheap. It's already down below 500.

It is recommended to directly use two 1G DDR2 667 memory to open dual channels. This makes it less likely to have compatibility issues.

The original 533 memory can be resold.

AMD's Athlon™ bus is 1000Therefore, at least the memory with a frequency of 667 or more can be dual-channel in order to fully exert the performance.

Generally, the motherboard that supports 533 memory also supports 667 memory, but the 667 memory automatically drops to 533 to work, and no matter what type of board and CPU you are, as long as the higher frequency memory is mixed with the low-frequency memory, it will automatically drop to the low frequency to work, I don't recommend that you add 667 memory, adding it is equivalent to 533, and you buy 667 is more expensive than 533, if you want to use 667, you have to remove 533, Don't eliminate the original 533 in order to use the 667 one. In fact, the performance difference between 533 and 667 is not very large, it is recommended to buy a 533 directly, which does not waste money and achieves the purpose of upgrading.

Yes, but it is not recommended (mainly because it can't be drawn), 667 will be downclocked to 533 to work together, it is better to buy 533 directly.

The memory frequency only shows the integer, and there may be a decimal number behind it, for example, it will show 2667 if rounded. As long as you don't have a blue screen when using the computer, you'll be fine.

As long as the motherboard supports it, the memory can run at a frequency higher than the nominal frequency after being set in the motherboard BIOS. Because the nominal frequency is set by the manufacturer, it is generally conservative, and it is 100% guaranteed to operate stably at this frequency. As long as the memory particle physique is not too bad, it can be a little more than a little more frequency.

The memory particle is of good quality, and even the factory frequency is 2666, and it runs stably above 3600 with a little voltage.

The memory frequency can also be run at a lower rate. For example, if you buy two different particles, but the frequency is 3000 memory and the shirt is used at the same time, it is possible that the compatibility is not good, and it cannot run stably under the nominal 3000 frequency or Senshou rate, and a blue screen will appear. Generally, as long as the frequency is reduced, such as 2666, there will be no blue screen.

How to build a flexible dual channel.

On most ATX motherboards, there will be 4 memory slots divided into two different colors, and two adjacent slots of different colors form a memory channel. Intel's Flex Dual-Channel technology has the following two dual-channel memory operating modes:

1.Symmetrical dual-channel operation.

The symmetrical dual-channel operation mode requires the memory capacity of the two channels to be equal, but there is no strict requirement for absolute symmetry of the memory capacity, and the A channel can be 512MB

512MB, B channel is 1GB, as long as the total capacity of A and B channels is equal. It can be used in this mode.

2, 3 or.

The 4 memory modules get dual-channel mode, and if the memory module speed is used differently, the memory channel speed depends on the speed of the slowest memory module installed in the system. The details are as follows:

1) Absolute symmetry of memory modules. This is the most ideal symmetrical dual-channel, that is, insert the same capacity of memory sticks in the same color slots, the number of memory modules is 2 or 4, and all the memory in this mode works in dual-channel mode, which has the strongest performance.

2) Symmetry of memory capacity. This mode does not require the same number of memory modules in the two channels, and can be composed of 3 memory channels to form a dual channel, and the total memory capacity of the two channels is equal, and all the memory also works in dual channel mode) The performance is slightly inferior to mode (1).

2.Asymmetrical dual-channel mode.

In asymmetric dual-channel mode, the memory capacity of the two channels can be unequal, and the size of the memory capacity that makes up the dual channel depends on the channel with the smaller capacity. For example, if channel A has 512 MB of memory and channel B has 1 GB of memory, 512 MB in channel A and 512 MB in channel B form dual channels, and the remaining 512 MB memory in channel B still works in single-channel mode. It is important to note that both RAM must be plugged into slots of the same color.