Introduction to Random Access Memory [RAM]
Who the term random access memory can not really associate that is now learn that the name belongs to the so-called working memory. Translated the whole memory random access, we got exactly what a task must meet the RAM? The files that the working memory or processed will be deleted after switching off the power supply.
As the development in the field of computer electronics progresses rapidly, there are already various types. In the following some memory components are listed:
RAM – Random Access Memory
SRAM – static random access memory
DRAM – Dynamic Random Access Memory
SDRAM – Synchronous Dynamic Random Access Memory
DDR SDRAM – Double Data Rate Synchronous Dynamic Random Access Memory
DDR2 SDRAM – double data rate 2 synchronous dynamic random access Mememory
FRAM – Fast Random Access Memory
FPM RAM – Fast Page Mode Random Access Memory
EDO RAM – Random Access Memory Extended Data Out
MRAM – Magneto-Resistive Random Access Memory
RDRAM – Rambus Direct Random Access Memory
XRDRAM – Extended Rambus Direct Random Access Memory
A memory is comparable to the human short-term memory, so it stores and processes open programs and provides speed when reusing this program. The maximum limit of 4 gigabytes of RAM is currently at, but there are now especially for Vista one with 8 gigabytes of memory.
SDRAM, DDR, DDR2 or DDR3 – What is it?
This type of memory is the oldest of which memory types that can currently buy in PC shops. A maximum of 512 MB RAM are available for about 45 euros. SDRAM is commonly found on older PCs. The signals are transmitted at a rising clock edge.
DDR stands for Double Data Rate DDR SDRAM and is actually spelled correctly. Here data bits can be transmitted not only at the rising edge, but with on-and falling edge of the data signal. Accordingly, the data transfer rate (almost!) is twice as high.
DDR2 – For DDR2 twice as many, or 2 bits of data on each rising and falling edge of data signal.
DDR3 – DDR3 graphics cards have been in use longer than memory (GDDR3). In the DDR3 voltage was lowered. They are therefore ideally suited to be used in notebook computers.DDR3 memory is also faster than DDR or DDR2 – due to eight-prefetch. Given the relatively high prices but worth a system that uses DDR3 yet.
How much RAM do I need ?
Again and again we read in brochures of PCs that contain 4, 6 or even 8 GB of RAM. Many buyers feel addressed them and take hold. What many do not know: oodles of RAM does not necessarily benefit a lot. Decisive are other factors.
Before you succumb to the memory craze, you should ask yourself the question of why the PC will be used. Memory is precious. An unnecessary upgrade goes so fast on the wallet.
Two to 16 GB of RAM without any difficulties
If you use your PC primarily as office PC and, furthermore, no demanding applications, 2 GB of RAM in most cases is sufficient. Only when it gets more complicated, you need more.
Such as when you use demanding applications for video or audio editing or image editing. Very latest PC games often lust after a maximum amount of memory in order to run smoothly.
Here, we recommend much more than 2 GB of memory use. With 4 GB you have a sufficient base. If you have the financial resources, including 8 GB of RAM are feasible and not wrong.
The operating system is crucial
The largest amount of memory brings you nothing, however, if your operating system can not utilize. This is for 32-bit operating systems of the case. Here are 3 to 3.5 GB of RAM can be used.
The consequence is clear: If you have a 32-bit operating system and 8 GB of RAM, you have theoretically safe hands. Virtually more than half of the memory is unused.
Especially when buying a new PC with lots of memory, so you should make sure that you get an operating system with 64 instead of 32 bits. Only then can you make the most of usable RAM.
Choice between DDR1, 2 or 3 on RAM
Also important is what kind of memory is installed. The previous model types differ simply by the prefix symbol with number
DDR1 stands for the oldest established standard for memory. This is followed by DDR2. News today is DDR3 RAM. This particular variant is expected to be replaced after 2013 by the new standard DDR4.
The differences between the various versions are quickly described: the more recent the model, the higher the throughput and thus give the performance of RAM.
So if you buy a PC, make sure that a current RAM is installed. Preferably DDR3, DDR2 unless otherwise possible.
Tips for Choosing RAM
First Optimal memory size
How much GB is supposed to be now? To answer this question, the system must be considered as a whole. In particular, the operating system will be the first “software” a minimum amount of memory. Windows 7, for example, sets the 32-bit version requires at least 1 GB of memory (64-bit even 2 GB).
The specification of the memory size is a key technical feature that there is to consider when buying.
Second Two 1 GB or a 2 GB memory module?
In various online shops or in the PC shop often found the term “kit”. For example, the product is “A-Data PC2-6400 Value Edition Memory 2 GB DDR2 RAM Kit “that sold 2 x 1GB memory.
It is important before purchasing a look at the motherboard to lay. If the existing RAM memory be expanded, so has to be checked, how many RAM slots available on the motherboard and are still free.
Also, the motherboard manual is your friend. Motherboards do not support any size of memory chips. Thus the disappointment after the installation is not great, must first be looked into Manual.
Third DDR, DDR2 or DDR3 – What should I buy?
The question of the use of DDR memory also arises when buying RAM. What DDR type you need yourself, you can find out by either existing RAM modules look or a glance at the manual throws. Among themselves, the East German versions are not compatible. This is also defined type of construction. DDR2 Memory DDR3 fits into any slot.
4th RAM in Dual-Channel mode
From the RAM modules to be taken out as much as possible. Almost all current dual-channel memory modules. Here, the data throughput nearly doubled. It can therefore transmit almost twice as much data GB. Whether dual channel but possible in practice depends on the motherboard or chipset. The manual can also be found closer to it.
5th Clock Speed of Memory
The clock speed of the memory should be higher than the FSB (Front Side Bus). Given the frequency in MHz (eg 633 MHz, 800 MHz). RAM with a higher clock speed than the front-side bus are so compatible. The blocks can be used accurately, should be read in the motherboard manual.
6th What CL Value Should My Memory Have?
CL is short for “CAS Latency” (Column Access Strobe Latency). This value indicates after how many clock cycles the memory data to the CPU can transfer. CL5 at which memory can thus transferred after 5 clock cycles to the CPU.
How much my Virtual Memory should be ?
The so-called virtual memory is the lifeblood for Windows, for he then jumps as a useful aid when memory (RAM) is low. Mostly attributable image editing programs from the memory, but also complex applications, games or cause a heavy load. Who the paging file is optimally adapted to their individual needs can be more performance potential tickle from his computer. With poor or no optimization of the system is slowed down and the more computing work.
On the Internet it says that the virtual RAM must be three times as large as the size of the RAM module. In order to even get to the setting, we need to open the Control Panel. See ” Performance and Maintenance “a selection list appears, from this, choose” Adjust Visual Effects “. It opens a window with three navigation tabs above.Under “Advanced” can “in the Virtual Memory Change “option. The custom size is a value is stored. Mostly this size memory insufficient and needs to be expanded. No way I would “size is managed by the system” to select, because the system sets a too small value and returns it in an emergency, to slowly release.
In the initial size should be a value, depending on the available disk volumes are being used by at least 2000 megabytes. The maximum value should be three times as large, that is about 6000 megabytes. With ” set “and a reboot, the new visual memory taken and will have an immediate positive impact on the system. One can wonder how much power is just released on older computers. Incidentally, you can also have a USB flash drive or use an external hard drive for the virtual RAM, but these media are usually too slow.
Closing Remarks and Other Tips
Buyer of RAM will be overwhelmed by the offers. Especially many technical terms confuse buyers. Those who look into the motherboard manual, can not go far wrong. The Installation of memory is not difficult and can even be performed by amateurs. To tune the PC is by extension of the RAM that is affordable, and easy. To express about thoughts about “choose the best RAM”. drop a comment below.