Computer RAM Suppliers in Australia: An Overview

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Computer RAM is a requisite necessity for all the computers around the world as it is RAM which is responsible for the performance of the computer. Technological advancements have opened the doors of multiplicity of suppliers offering a perfect assortment of RAM modules. There is parallel propinquity between demand for Ram and RAM suppliers in Australia. A good free trade policy adds oodles of advantage for suppliers outside Australia who can offer varieties of RAM modules.

These suppliers offer it all starting from simple and basic DDR to higher and upgraded versions in the form of DDR2, DDR3 to SDRAM to any other latest module. It is these RAM suppliers who make it available in every state of Australia.

Internet access makes it easy to reach these suppliers as their catalogs offer extensive RAM products along with the cost and delivery details. Some of the RAM suppliers offer technical support for RAM across the Australian region. Apart from providing overnight shipping to delivery of bulk orders in less time in any part of Australia attract visibility to these suppliers. So just click and you never know the supplier might be at a corner offering you the quality RAM at your price and specifications you desire.

Types of Computer RAM Memory

--> Purchasing RAM or totting up more RAM to ones existing computer should be based on a thorough investigation about the stipulation, type, swiftness and competence of RAM. It is vital to know the characteristics of the RAM which are best suited for your computer. The various kinds of Ram available in the market can be classified as:

Static Random Access Memory (SRAM): primarily used for cache, uses multiple transistors, not equipped with capacitors for each cells.

Dynamic Random Access Memory (DRAM): memory cells with a paired transistor, persistently revamps the stored information to avoid deletion or corruption

Fast Page Mode Dynamic Random Access Memory (FPM DRAM): original form of DRAM, works in organized manner.

Extended Data-Out Dynamic Random Access Memory (EDO DRAM): rebellious version of FPM DRAM, 5% faster than FPM DRAM.

Synchronous Dynamic Random Access Memory (SDRAM): follows synchronized interface, 5% faster than EDO DRAM.

Data Rate Synchronous Dynamic RAM (DDR SDRAM): imitates SDRAM features plus higher speed.

Rambus Dynamic Random Access Memory (RDRAM): preferred speed of many cause of high speed.

SDRAM-has an important advantage over other memory types

SDRAM (or the Synchronous DRAM) works differently than other asynchronous memory types. It is based on the belief that most PC memory accesses are sequentially aligned. It is so designed that it is able to fetch all the bits in a burst as much as possible. It is with SDR RAM that the retrieval of information, in sequential reads, is speeded up considerably.



It is the memory controller that gives the size and location of the memory block. The SDRAM chip is able to supply bits as quickly as the CPU can take. It utilizes a clock so that the timing of the memory chip can be synchronized to the CPU’s system block.

It is due to such features that the SDRAM has an important edge over other memory types, enabling delivery of data, off-chip, at up to 100MHz burst rates. Once the burst gets started, the rest of the remaining bits of the burst length get delivered at a 10ns rate. SDRAMs are able to reduce burst rates to 5/1/1/1 at a bus speed of 66MHz. An 18% theoretical improvement over EDO is there for data transfers of right type.

Price of Memory (Computer RAM) As On 10th JUNE 2010

Memory Modules (Computer RAM) Price at Om Nanotech Private Limited, as on 10.06.2010.

Category	Product	Price
SDR	SDR 128MB 133MHz DESKTOP RAM (DIMM)	US $2.0
SDR	SDR 256MB 133MHz DESKTOP RAM (DIMM)	US $6.5
SDR	SDR 512MB 133MHz DESKTOP RAM (DIMM)	US $14.50
SDR	SDR 512MB 133MHz LAPTOP RAM (SODIMM)	US $18.50
DDR	DDR 512MB 400MHz DESKTOP RAM (DIMM)	US $14.00
DDR2	DDR2 512MB 667MHz DESKTOP RAM (DIMM)	US $7.50
DDR2	DDR2 512MB 667MHz LAPTOP RAM (SODIMM)	US $7.70
DDR2	DDR2 1GB 667MHz DESKTOP RAM (DIMM)	US $18.40
DDR2	DDR2 1GB 667MHz LAPTOP RAM (SODIMM)	US $18.65
DDR2	DDR2 2GB 667MHz DESKTOP RAM (DIMM)	US $35.65
DDR2	DDR2 2GB 667MHz LAPTOP RAM (SODIMM)	US $36.15
DDR2	DDR2 1GB 800MHz DESKTOP RAM (DIMM)	US $18.20
DDR2	DDR2 1GB 800MHz LAPTOP RAM (SODIMM)	US $18.45
DDR2	DDR2 2GB 800MHz DESKTOP RAM (DIMM)	US $36.85
DDR2	DDR2 2GB 800MHz LAPTOP RAM (SODIMM)	US $36.25
DDR3	DDR3 2GB 1066MHz DESKTOP RAM (DIMM)	US $39.15
DDR3	DDR3 2GB 1333MHz DESKTOP RAM (DIMM)	US $39.15
DDR3	DDR3 2GB 1333MHz LAPTOP RAM (SODIMM)	US $39.35
DDR3	DDR3 4GB 1333MHz DESKTOP RAM (DIMM)	US $75.00
DDR3	DDR3 4GB 1333MHz LAPTOP RAM (SODIMM)	US $76.00
*All memory modules are ex-stock Singapore and India. *Advance Payment only *Prices are subjected to change (May be 3 Times a day), without any prior information. Payment Mode: T/T (Singapore) D/D (India) RTGS (India) For further information, please send in your mail to it@om-nanotech.com

DDR2 More Efficient Than The Original DDR

DDR2 is a type of an SDRAM, this computer memory stores its memory in memory cells. These cells are then activated at according times to correctly operate with an external data bus. Although the DDR2 shares many similarities with the original DDR, as in the case with data transfer happening with the rise and fall at the edge of the clock, it is different in that the DDR2's bus is clocked at twice the speed. This basically allows the DDR2 to be twice as more efficient than the original DDR.

The key behind the high bus frequency with DDR2s is the coalition of electrical interface improvements, prefetch buffers, and various off-chip drivers. This is because DDR's prefetch buffer is twice of the DDR, which is 2bits deep. Also, its read latencies are between four and six cycles; again this is twice that of the DDR. Thus, twice as much bus speed is necessary to achieve an equal latency.

Also, the DDR2 is packaged relatively more expensively and more complicatedly than the DDR SDRAM or the SDR SDRAM, in exchange for a more blazing speed.

Backward compatibility with DDR2 DIMMs are quite limited. In fact, they are not designed to be compatible with DDRM DIMMs at all. This is because firstly, the notch positions in the DDR2 and the DDR are different along with the pin density slightly higher on the DDR DIMMs. Although not much of a "backward compatibility," but faster DDR2 DIMMs can be used with slower DDR2 DIMMs. However, in such a situation, the faster one would run at the speed of the slower DDR2.

Source :: Tech Faq