521 256MB 400HMz dual channel, and 1G667HMz, single channel which is faster

512mb ddr 400hmz

and 1G667HMZ are two different types of memory, the former is DDR and the latter DDR2.

First of all, DDR and DDR2 are two different types of memory, and since you have proposed DDR and DDR2 memory, you need to make sure that your motherboard can support both types of memory. (It is very rare for a motherboard to support both DDR and DDR2 memory).

Moreover, DDR and DDR2 cannot be used at the same time, let alone form a dual channel.

Secondly, 512M RAM and 256M RAM can't form a dual-channel, unless your motherboard supports Flex Dual-channel (which is only possible with new-generation motherboards, and it doesn't perform well).

You first have to make sure that your motherboard supports the memory, if you only support DDR memory, then you can't use DDR667 at all.

Secondly, try to engage in a single large memory instead of multiple small memory, because the memory has compatibility problems, and the compatibility between multiple small memories is not guaranteed, and the system will be very unstable. However, it is not so necessary to set up dual channels, because the performance improvement of dual channels is only about 3, which is almost negligible.

Now DDR memory is much more expensive than DDR2 memory, if your motherboard supports DDR then you will have to pay more, but DDR memory ** can only be higher in the future, until it is discontinued, so it is the best policy to buy early, buy bigger.

Only the same MB can be composed, and the model and frequency should also be the same, it is recommended to use 512MB DDR2 and plug it into the socket of the same color (if it is plugged into a different socket, it is an ordinary single channel). 512MB RAM**: Apacer 512MB DDRII 200 RMB, Apacer 512*2MB DDRII 1200 RMB (dual-channel dedicated set).

Other Memory**: Kingston 512MB DDRII 210 RMB, Corsair 512*2MB DDRII 570 RMB.

It is impossible for 521+256 to form dual channels, and DDR 400 and DDR2 667 are not comparable at all, and DDR 400 is not 400MHz, but 200MHz, and their slots are not the same.

According to what you said, 777MB DDR 400 and 1024MB DDR2 667 You yourself say who is stronger, obviously.

To activate the dual channel, you need to plug in two identical memories if the motherboard supports it.

Two 512 or two 256 or two 1G can group dual channels.

1G is faster if you use the two items alone, but it doesn't matter if you want to plug in all the memory, although the frequency will be adjusted to 400, I don't feel like 400 or 667 is faster anyway.

The flat rate and latency of 1g667hmz are much better than that of 521+256mb 400hmz.

It is recommended to use 1g of 667

Apacer 512MB DDR 400 (Classic Series) 200

512 and 256 are not double aisles.

It is necessary to have the same model and the same capacity to be able to form a dual channel.

The ** of the 512DDR400 is more expensive than the 190

Does the landlord's motherboard 400 and 667 support both types of memory?

The two memories you mentioned earlier can't be dual-channel.

It depends on your motherboard, if it's an intel series, then it supports "elastic dual channel".

To be clear, whether you form a dual-channel or not, increasing the memory in your case is definitely improving performance.

Yes, but the clock speed will show 333

Yes, the frequency can only be displayed as 333,

Whether you can form a dual channel depends on whether your motherboard supports it.

Intel's board 865 and above support dual channels.

AMD's CPU has an integrated dual-channel controller, so more than 939 pins support dual-pass.

If it is equipped with a 512 and two digging pants 256 to form a double side sock channel, the performance of double 256 will be better, because the bandwidth of the memory is doubled, and the data communication speed is theoretically doubled, but in practice there is not, but the system still has performance improvement, it is recommended to match double 256

Dual 256 forms dual channels, it will be 512MB not 256, and it will be the same capacity as a 512MB.

The composition is also Gaolu 512m, it is best to buy a 512m What if your motherboard does not support Dong Nianqing dual channel?So it's definitely better to use one 512m than two 256m.

The effect is the same, no matter how the composition is 512m. The key depends on whether your motherboard supports dual channels. Generally, such as 865 or above, KT800 or above, NF3 or above the motherboard are rounded and balanced with double orange as a channel, in that case, the effect of inserting two wide argument strips 256DDR400 will be better!

Memory has increased capacity by 50%, but read and write speeds have decreased by 50%. If you pay attention to the amount of memory, of course, it is good to add memory, otherwise it is okay not to add it, after all, 512M memory can also cope with most applications.

It is the storage capacity of the graphics card, and the larger this value, the higher the effect of the graphics card, which is the video memory.

The larger the independent video memory capacity, the smoother the software or games with high video memory requirements.

256 is the video memory, the bigger the better, of course, in the case of enough video memory, the bit width of the graphics card determines a better display effect and a smoother picture.

256MB is video memory. But the memory bit width of this graphics card is not very high.

No, it needs to be the same size.

It depends on the motherboard, the 865 motherboard 512MB and 256MB cannot form a dual-channel.

Above 945 can form a dual channel.

You still have 256, it's definitely 865 or 845

The 845 cannot open dual channels.

No, the required memory capacity should be the same.

The dual-channel result is 512, which is a better memory margin than a single 512.

A normal single-channel memory system has a 64-bit memory controller, while a dual-channel memory system has two 64-bit memory controllers with 128-bit memory bit width in dual-channel mode, theoretically doubling the memory bandwidth. While the bandwidth provided by a dual 64-bit memory system is equivalent to that provided by a 128-bit memory system, the results achieved by the two are different. The dual-channel system consists of two independent, complementary intelligent memory controllers, which theoretically can operate simultaneously with zero latency between them.

Let's say there are two memory controllers, one for A and the other for B. When controller B is ready to make the next memory access, controller A is reading and writing to the main memory, and vice versa. This complementary "nature" of the two memory controllers can reduce wait times by up to 50%.

The two memory controllers of the dual-channel DDR are functionally identical, and the timing parameters of both controllers can be programmed separately. This flexibility allows users to use two DIMM sticks with different configurations, capacities, and speeds, while the dual-channel DDR can be easily adjusted to the lowest memory standard to achieve 128-bit bandwidth, allowing DIMM sticks with different density and latency characteristics to work together reliably.

The above shows that dual-channel is better.

In terms of speed, the latter is faster, about 25 faster.

But from the perspective of the space for future upgrades, a single 512 is convenient to upgrade, after all, it is more convenient to add one more 512 in the future, and it is estimated that 256m will not be able to buy in the future, and it will not be sold into a bottleneck.

Of course, the double channel is good, why don't you work hard to invent a double channel? But 2 roots of 256 are not conducive to upgrading.

Dual-channel is good and improves memory usage!

If you play 3D games like CF and CS, 256M is enough. 512M's 3D performance is definitely better, but the heat and power consumption are definitely greater, it mainly depends on your choice, if ** the difference is not big, it is still recommended 512M, after all, the performance is stronger.

The graphics card has nothing to do with how much software you prescribe, mainly the processor and memory. It's basically okay now. Feel free to play.

512 graphics card has been popularized You can't just look at the video memory It also depends on which generation of technology he is 512 For crossing CS enough Memory 2G tube enough If you choose this book, I like Lenovo very much About 5000 dual-core 2G memory GT240M graphics card is enough for you to choose this I think it must be beautiful and comfortable for yourself Buy on demand Don't blindly climb high This is my opinion Think about it yourself.

It doesn't matter what you drive, that's a matter of memory, the operation of the picture depends on the graphics card, if you want to play large-scale 3D games, for example, Warcraft 256M can barely play, but sometimes there will be a stuck screen It is recommended to use a 512 graphics card with more than 2G of memory, so that you can open a few more applications.

It seems that you still don't understand the role of memory and graphics cards.

Look what you're doing.

Watching movies, chatting QQ, writing articles, and making reports, just as fast.

If you run large programs or play games, it is 1024m faster.

Of course, it's 1G fast!

A lot of difference! 2 strips of 256 can only be equal to a level of 600 at most