Posts Tagged ‘DDR2 memory’
Know About The DDR Memory To Get Best For Your PC
Posted by Parkzone Corsair in Memory on November 5th, 2010
Know About The DDR Memory To Get Best For Your PC
First of all, we need to know what is DDR memory? DDR SDRAM (double-data-rate synchronous dynamic random access memory) is a type of fast computer memory. It works faster than “single data rate” SDRAM and transfer twice the data without increasing the clock frequency. DDR RAM transfers data on both the rising and falling edges of the clock signal. It comes in various speeds and capacity and consumes less power than the conventional SDRAM.
It is also very important of us to know that different motherboard support different specification of memory modules. So, it becomes very important to know about the various types of DDR memory that are available in the market and comes from different memory manufacturers.
The most common types of computer RAM that are used in PCs are:
Double Data Rate DRAM (DDR) Double Data Rate 2 DRAM (DDR2) Double Data Rate 3 DRAM (DDR3)
DDR1 memory
DDR (Double Data Rate) interfaces provide two data transfers per differential clock. The data becomes registered when the CK goes high and low. Like all DDR RAM it is available as registered or un-buffered. DDR1 memory has their address and control lines buffered in order to reduce signal loading and is considerably more expensive than un-buffered DIMMs. Unbuffered DDR1 can only be installed on one motherboard to a maximum of 4 x 1GB. Buffered or registered DIMMs don’t have these limitations and server boards can accommodate 8 x 1GB, 16 x 1GB or more.
DDR2 memory
DDR2 memory, the second generation in DDR memory begins with a speed level of 400MHz, which is actually the highest speed for DDR1. Now this is interesting to know that because of different latencies a 400MHz DDR1 will serve better than a 400MHz DDR2, but DDR1 cannot compete with DDR2 as the speed goes higher (533MHz).
DDR3 Memory
The Third generation of DDR memory is DDR3, it begins with a lowest capacity level of 800Mbps (400MHz) and goes up to 1600Mbps. It gives higher performance with lower power consumption. DDR3 speed runs at two billion data transfers per second.
Not only it is important for us to know about the RAM but also it is equally important to know about the motherboard. Without know the compatibility of our motherboard we cannot find suitable RAM for our system. It is advisable to use memory selector or system scanner to find compatible and matching computer RAM for your system. Besides compatibility, do compare different brands available and their prices
The author is an expert writer with over 10 years of marketing experience in the field of memory modules. Currently, he is working for Om Nanotech Pvt. Ltd. He is writing on various computer products like RAMS, USB drives, Flash drives, Web cam and other computer hardwares.
Bios
Image by Henrique Vicente
A bios do meu novo computador 
Placa mãe Elitegroup 760GX-M (apesar do nome, deve ser a mais barata do gênero…)
Sempron 2600+ (inbox, meu pai ainda não abriu e como ele foi quem tomou iniciativa de montar outro PC…)
HD SATA 60GB Samsung (aff)…. Seagate tá faltando por aqui… paciência 
Falta comprar: 1GB de memória DDR 400MHz e DVD-RW
Adeus floppy, você é um ser bizarro e ultrapassado!
Laptop memory
Posted by Parkzone Corsair in Memory on November 2nd, 2010
There are lots of people who always in a conscientious effort to upgrade memory in laptop to increase its effectiveness. In desktop systems, you are normally given three or four slots for memory modules but this scenario is not seen with laptops as they only come with two slots.
Normally, laptops don’t use SIMM and DIMM memory which is used in case of non portable machines. When you will delve more into the details, you will find that following are the basic types of memory used in laptops;
• 72 pin SODimm
• 144 Pin SODimm
• SDRAM
• DDR SDRAM
Certainly the more memory in a laptop PC the better but there are other concerns regarding memory in laptops. Laptops are generally more restricted when it comes to terms of memory that can be installed into a system. More often access to that memory can also be a headache if you plan a future upgrade.
Most of the laptops are now using the DDR2 memory technology, but a number of new laptops use the DDR3 standard.
We generally find two ways through which the memory speeds can be designated. The first one is by the memory type and by finding its clock rating, like DDR2 400. Another r method is by documenting the type along with the bandwidth. In this instance the same DDR2 memory would be listed as PC2-3200 memory. Below is a listing in order of lowest to fastest memory types in both formats:
DDR2 400 / PC2-3200
DDR2 533 / PC2-4200
DDR2 667 / PC2-5300 or PC2-5400
DDR2 800 / PC2-6400
DDR3 800 / PC3-6400
DDR3 1066 / PC3-8500
DDR3 1333 / PC3-10600
DDR3 1600 / PC3-12800
In addition to the type of memory installed in the laptop, the speed of the memory can also make a difference in the performance. When it comes in terms of comparision, it is of outmost importance to check both of these pieces of information to evaluate how they may impact performance.
To read about dvd vierge and other information, visit the dvd-r site.
Type of Computer Memory Modules
Posted by Parkzone Corsair in Memory on November 1st, 2010
Type of Computer Memory Modules
You can easily boost up your computer performance considerably by upgrading your computer. Upgrading the computer memory is perhaps the least expensive and the easiest way. Consider the computer RAM memory to be a workspace where all the information it requires to act upon are stored on a temporary basis. You can liken it to a desk which you use for sorting through your work. In case the size of this desk happens to be small, your efficiency would get limited compared to a larger desk which would definitely allow you to work more effectively and with more efficiency.
In a similar fashion, a computer that has more RAM has the ability to work more efficiently as it doesn’t need to gather information from the hard disk drive all that often. For users that are working with larger files or who are opening more than one program at one time or are using memory intensive applications like games, graphics or video editing software require memory upgrade most particularly.
How do you know that time is right for a memory upgrade? There are certain signs that indicate that up gradation of memory is needed. In case your mouse pointer turns into an hourglass for long time periods or if you can hear that your hard drive is working or that your computer is slower that what you expect….the reason is because of insufficient memory. When the physical memory gets insufficient the system tends to use up the Hard Disk Space as memory or what can be termed as ‘virtual memory’. The system slows down to a considerable extent as the access time of Physical memory is in tens of NanoSeconds and Access time of Hard Disk is in MilliSeconds.
The DDR2 memory module is the next generation memory technology which enhances the thermal performance, promotes faster speeds, gives higher data bandwidths and offers lower power consumptions. The DDR2 DIMM or the dual inline memory module consists of a range of memory components that are mostly black in color and are attached to a printed circuit board that is usually green in color. At the bottom of the DIMM are gold pins which connect the module and the socket to a larger printed circuit board. The pins that are located on the front and back of the DIMM have no connection with each other.
The DDR2 memory modules come in frequency ranges of 400MHz, 533MHz and 667MHz speeds/data rates. The 240-pin DIMMs provide DDR2 SDRAM memory for desktop computers. Each of the 240-pin DIMM provides a 64-bit data path or a 72-bit data path for the ECC or the registered modules. Therefore they are singly installed in 64-bit systems. Most DDR2 chipsets provide a 128-bit data path as they lend their support to a dual-channel memory. The DDR2 DIMM memory modules consist of incompatible pin configurations, core voltages and memory chip technology and are not backward-compatible.
The DDR2 memory modules have been designed with a different ‘key’ in the edge connector so as to prevent its insertion in to the DDR motherboard or incompatible memory sockets. The DDR2 SDRAM DIMM cannot fit into the standard SDRAM DIMM socket or into the DDR DIMM socket. The DDR2 memory modules with their 1.8V power supply, offer greater power saving over the 2.5V DDR memory modules. The 240-pin DIMMs are in DDR2 PC2-4200 (DDR2-533) SDRAM or DDR2 PC2-3200 (DDR2-400) SDRAM. In order to operate a DDR2 memory, your system’s motherboard must have 240-pin DIMM slots and a DDR2-enabled chipset.
The author is an expert writer in the field of the technology. Presently writing on various topics related to computer hardware and peripherals like computer RAM, USB drives, memory cards, memory modules and other computer products.
