The DDR SDRAM is an enhanced version of the old school SD RAM. Known as double data rate synchronous dynamic random access memory this chip has a much greater bandwidth to offer to its users. The thing that makes this memory integrated circuit different is that it unlike the other circuits it transfers the data on both the rising and falling edges of the clock signal. This is what makes the DDR Memory Ram highly efficient as it gives you double the speed while maintaining the same frequency on the front side bus.
The DDR memory chips that are available in the market have no architectural differences with regards to the clock frequencies that they have been designed for. The number denoted on the chip is an indication of the speed at which the device will be performing. Underclocking is the phenomenon of making your chip run at a speed lower than that which has been specified. Overclocking is the exact opposite of this phenomenon. Amateurs should however not experiment with their memory chips in this manner as it may lead to damage.
You will find some new chipsets to be making use of dual and quad channel configurations. This is done for the purpose of increasing the bandwidth. In order to reap maximum benefits of a dual channel configuration you should make use of a pair of matching memory modules.
The internet offers you a unique opportunity to look for DDR Memory chips for your desktop computer. Some the Computer Memory chipsets available online are:
INDUSTRY STANDARD 1GB PC2100 266MHZ NON-ECC DDR SDRAM
This is a super high quality 1GB chipset for your desktop computer. It comes with a 184 pin and dual in line memory module configuration. It as gold leads and a phase lock loop that helps the clock driver to reduce the loading. The chipset enters the commands on each positive CK edge. The chipset can perform concurrent operations with ease due to the four internal clock inputs. It also comes with an auto precharge option and auto refresh and self refresh modes. You will be able to get your hands on this chipset for just $45.
INDUSTRY STANDARD 512MB PC2100 266MHZ NON-ECC DDR SDRAM
If you are looking for something with a smaller memory capacity then you can grab the above mentioned model for just $25. This is a special 512MB chipset that has a Non-ECC optimized pin out. It features the dual in line memory module along with gold leads. The four internal banks enable the chipset to run concurrent operations. It has all the standard features of the series and is ideal if you are looking for a 512 MB chipset.
INDUSTRY STANDARD 256MB PC2100 266MHZ NON-ECC DDR SDRAM
If you want something even lower than the 512 then you have this particular 256 MB chipset that gives you the same optimum performance. This speedy chipset will help to give your PC a boost and you can get your hands on this one for just $19.