Computer Memory

I don't know about the new computers is that possible or not, but I have in my work an old acer desktop that run on Pentium 4 1.5Gh and having a RAM of 128 m and the motherboard have 3 slots for SDRAM, at first new SDRAMs was no ware to be found so I brought an old 2 sdrams each have 64 m and after I add them the system went up to 256 m, and have being using it for more than one year and It was Ok until I bought two new 512 SDRAMs and replaced it with the old ones so I guss it s ok at least for the old PCs

I NEVER TRY IT IN MY NEW PCs

carry out a specific task

CL: (CAS Latency) or Column Address Strobe Latency is a measurement of delay of the chip's process. So the lower the CL number the lower the latency will be. So your answer is cl5.

A megabyte of memory can contain ONE of the following:* About a million letters of plain text - equivalent to about 300 pages.

* One photograph in decent quality.

* Several photographs in medium or low quality. The exact amount depends on the size and quality of the photographs.

* One minute of sound (for instance, MP3), in high quality.

* Several minutes of sound in low quality.

Note that one MB (megabyte) is a fairly small amount for a modern computer. As of 2017, computers typically have several GB (thousands of MB) of RAM memory, and somewhere between 0.5 and 3 TB (millions of MB) of hard disk space.

It means that it runs at 400 MHz (That is 400 million data transfers per second).

Now for the PC3200, this means that the peak transfer rate delivered is 3200 MB/s

Click the following link for more details

http://en.wikipedia.org/wiki/DDR_SDRAM

When you upgrade the modules in your computer, you need to match the latencies of new ones to the old ones in the computer. When they are not the same it can cause the computer to run slow and not run properly.

Video files - since each 'frame' of video takes a lot of space to store the information.

32 Mb = 32,768Kb (multiply by 1024) 32 Mb = Not a whole lot of space nowadays 32 Mb = Fits about 8 songs on an MP3 player, less than one album for sure

The main disadvantage of RAM is that it is volatile memory. When the power goes out, the information is gone. That means there is always a risk of losing data. There is also a lot of time wasted loading an operating system. You load the same things each time you push the power button. It would be nice if you could keep that data in memory all the time without having to load it, and it be there even when the power is off.

An alternative is nonvolatile RAM, but it is slow in comparison to standard RAM. SSD drives use RAISE schemes to use a larger pipeline to store more information at the same time and hide the slowness. But current nonvolatile RAM has a shorter lifespan than traditional DRAM or similar memory. In the future, when faster and more reliable nonvolatile RAM is in mass production, it is possible that there will be a universal storage type that will replace ROM, RAM, and hard drives, and result in simpler to produce computers.

The storage device that stores the least amount of information is a floppy disk which only has a average storage space of 1mb

RAM is a primary storage medium, but it is volatile. Cache memories storage frequently accessible data.

Memory refers to random access memory (RAM) and storage refers to your hard disk space. Hard disk is what you save all you files and operating systems on and ram remembers where to find recently used items in order to bring them back fast. It's like if you think of your house as your storage. All the stuff you own is in your home but stuff you used recently you remember exactly wear it is, like maybe you wallet or keys, and that would be your memory

Read-only memory (usually known by its acronym, ROM) is a class of storage media used in computers and other electronic devices. Because data stored in ROM cannot be modified (at least not very quickly or easily), it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to require frequent updates).

Nowhere... is still there. Just that if you save new information it will write it over the deleted information .

memory in system is not in the form of energy .so it will have memory in ones and zeros.(binary)

Not certain, but reasonably sure that they're made in Germany.

You could search for your Dell's make and model on the Dell website to find out which type of RAM you need, but there is an easier way. Crucial.com is an online RAM store. They have a "Scan My System" button on their home page. It can determine what type of RAM you need. Write down what it suggests and then compare prices at different shops.

Check it out.... SDRAM comes only in 64 bit modules (long 168 pin DIMMs). SDRAM has a access time of only 6-12 ns. The performance improvement over EDO RAM was a mere 5 percent running at 66 MHz. At 100 and 133 MHz it proves better. DDR RAM is clock doubled version of SDRAM, which is replacing SDRAM during 2001-2002. RAMBUS (RDRAM) is a more futuristic RAM type. Intel and others had great expectations from this type, but it flopped in 2000-2001. MORE ON RAM KarbosGuide.com. Module 2e1. About RAM What is RAM? [top] This page should be read together with modules 2a, 2b, 2c, and 2d, which deal with system board, system bus, I/O bus and chip sets. When we talk about motherboard and chip sets, we cannot ignore RAM. Warning: RAM and RAM chips is a very complicated, technical subject area. I can in no way give a complete, comprehensive description of this subject. RAM is our working memory storage. All the data, which the PC uses and works with during operation, are stored here. Data are stored on drives, typically the hard drive. However, for the CPU to work with those data, they must be read into the working memory storage, which is made up of RAM chips. To examine RAM, we need to look at the following: RAM types (FPM, EDO, ECC, and SD RAM) RAM modules (SIMM and DIMM) in different versions RAM and the system bus First, let us look back in time. Not too many years ago, Bill Gates said, that with 1 MB RAM, we had a memory capacity, which would never be fully utilized. That turned out to be untrue. -------------------------------------------------------------------------------- Historical review Back in the 80s, PCs were equipped with RAM in quantities of 64 KB, 256 KB, 512 KB and finally 1 MB. Think of a home computer like Commodore 64. It had 64 KB RAM, and it worked fine. Around 1990, advanced operating systems, like Windows , appeared on the market, That started the RAM race. The PC needed more and more RAM. That worked fine with the 386 processor, which could address larger amount of RAM. The first Windows operated PCs could address 2 MB RAM, but 4 MB soon became the standard. The race has continued through the 90s, as RAM prices have dropped dramatically. Today. it would be foolish to consider less than 32 MB RAM in a PC. Many have much more. 128 MB is in no way too much for a "power user" with Windows 95/98, it is important with plenty of RAM. Click here to read about the swap file and RAM considerations. Windows 98 is a little better at handling memory, but still a lot af RAM is a good thing. The traditional RAM type is DRAM (dynamic RAM). The other type is SRAM (static RAM). SRAM continues to remember its content, while DRAM must be refreshed every few milli seconds. DRAM consists of micro capacitors, while SRAM consists of off/on switches. Therefore, SRAM can respond much faster than DRAM. SRAM can be made with a rise time as short as 4 ns. It is used in different versions in L2 cache RAM (for example pipe line BURST Cache SRAM). DRAM is by far the cheapest to build. Newer and faster DRAM types are developed continuously. Currently, there are at least four types: FPM (Fast Page Mode) ECC (Error Correcting Code) EDO (Extended Data Output) SDRAM (Synchronous Dynamic RAM) -------------------------------------------------------------------------------- A brief explanation of DRAM types FPM was the traditional RAM for PCs, before the EDO was introduced. It is mounted in SIMM modules of 2, 4, 8, 16, or 32 MB. Typically, it is found in 60 ns or 70 ns versions. 60 ns is the fastest and the one to use. You cannot mix different speeds on the same Pentium motherboard. EDO (Extended Data Out) RAM is an improvement of FPM RAM. Data are read faster. EDO extends the time that output data is valid, which betters timing issues between the CPU and RAM and this way improves the performance. By switching from FPM to EDO, one could expect a performance improvement of 2 to 5 percent. EDO RAM was usually sold in 60 ns versions. A 50 ns version was available at higher cost. EDO has now been replaced by the even faster SDRAM. ECC RAM is a special error correcting RAM type. It is especially used in servers. SDRAM (synchronous DRAM)): The replacement for DRAM, FPM, and EDO RAM types. SDRAM "locks" (synchronizes) the memory access to the CPU clock. This way we get faster data transfer. While one portion of data is tranported to the CPU another can be being prepared for transfer. SDRAM comes only in 64 bit modules (long 168 pin DIMMs). SDRAM has a access time of only 6-12 ns. The performance improvement over EDO RAM was a mere 5 percent running at 66 MHz. At 100 and 133 MHz it proves better. DDR RAM is clock doubled version of SDRAM, which is replacing SDRAM during 2001-2002. RAMBUS (RDRAM) is a more futuristic RAM type. Intel and others had great expectations from this type, but it flopped in 2000-2001. -------------------------------------------------------------------------------- 8 or 9 bits per byte? Normally you figure 8 bits to one byte. For many years, a ninth bit has been added as parity bit in the RAM blocks to verify correct transmission. That way you have to transmit 9 bits, to store 8 bits in the old 30 pin RAM chips. And it takes 36 bits to store 32 bits in the larger 72 pin chips, which increases the cost of the RAM chip by about 12%. If your motherboard requires 36 bit modules, you must respect that. Fortunately, most system boards accepts 32 bit modules, so this creates no problems. -------------------------------------------------------------------------------- RAM and motherboard [top] You cannot freely install your desired RAM type. RAM is controlled by the chip set on the motherboard, so you must install a type, which matches your motherboard. Furthermore, RAM chips come in different sizes, which must match the system board. On modern system boards, RAM is installed on SIMM or DIMM modules. Before, small individual DRAMs were used. There was usually room for 36 small chips on the system board. That made it cumbersome to install new RAM. Then, someone figured out to install RAM chips on cards, which are easily installed. First came the SIPP modules. They had multiple pins, which fit in the motherboard. Since then came the SIMM modules. They are mounted on a card, which has an edge connector. They fit in sockets on the motherboard, and anyone can install them. -------------------------------------------------------------------------------- RAM speeds [top] RAM speed is measured in ns (nano seconds). The fewer ns, the faster is the RAM. Years ago, RAM came in 120, 100 and 80 ns. Today, we are talking about 60 ns and faster. It becomes complicated to describe the relationship between RAM speed and the ability of the system bus to utilize fast RAM. I will gloss over that. But here is a table which illustrates RAM speed, relative to clock speed: Clock speed Time per clock tick 20 MHz 50 ns 25 MHz 40 ns 33 MHz 30 ns 50 MHz 20 ns 66 MHz 15 ns 100 MHz 10 ns 133 MHz 6 ns -------------------------------------------------------------------------------- Peak Bandwidth [top] Here you see the maximal peak bandwidth of the three well known RAM types. The figures illustrates the absolutely maximal transfer from RAM to the L2-cache - in peaks, not as continuously transferred. RAM type Max. peak bandwidth FPM 176 MB/sec EDO 264 MB/sec SD 528 MB/sec

RAM is neither an input nor output, it is a form of data storage. An input is an external device that sends information to the computer, such as a mouse, keyboard, etc. An output is something that displays information from the computer itself, such as headphones or a monitor. RAM is neither of these things.

As of mid 2016, you are probably looking for an Intel i7 series.

Some sites say that the i7 6700k is the very best for gaming. It has four cores and eight threads. It has an 8MB cache and supports DDR4 and DDR3L.

Other sites say that the i7 5960X is the best. It is definitely more expensive, but it depends on who you talk to as to whether they will tell you it is definitely better, or whether the performance is close to identical, and you should get the cheaper one. :)

State - Dependent Memory **

Virtual memory simulates additional memory (RAM). It is used by the operating system to swap currently not being used applications from RAM to Virtual Memory. It's called paging or Page Swapping.

It's called a paging file or swap space. In most Microsoft os's it is a reserved file area named 'pagefile.sys' and is a hidden OS file. You can modify the settings of the pagefile by right clicking on my computer -> Left click on Properties -> Left click on the Advanced tab (Or "advanced system settings" link in windows 7) -> "Settings" button under Performance -> then the Advanced tab again -> Then at the bottom you'll see Virtual Memory and Paging File. DO NOT MODIFY THESE SETTINGS unless you are comfortable doing something that may adversely affect your computers performance.

On a Linux or Unix or other systems it can be designated as a separate high speed device or a partitioned area on a hard drive.

Windows Vista and later Microsoft systems allows fast usb drive storage to be used as a swap area instead of or in addition to the pagefile area on a hard drive. Called ReadyBoost, it enhances system performance by using a faster swap area on a usb drive.

ram stands for random access memory while rom is read only memory
RAM is Random Access Memory that is used to store data that is from using desktop applications or web browser based functions. ROM is Read Only Memory, ROM is used for only one thing and that is to read the memory that is integrated within the CD that you put in the computer. You can remember what ROM does by just remembering Read Only Memory, because all it does is what the name implies, which is to read data.

For Memory as in Harddrive, Go on "My Computer", Click on Which Drive you want to Know, and Then It should say On the Side Bar, "Free Space : ????" and "Total Space : ???" For RAM Memory, On "My Computer Click "System Information" on The Left bar, and Its There. :) Miles.

The only ways to expand the physical memory (RAM) in a PC is to add more RAM to augment the existing RAM, or to replace the existing RAM with larger chips. All chips must be of the same type and speed, but needn't be the same size (although it's better if they are).

Note that the motherboard may impose a limit on the maximum amount of RAM supported, however 32-bit operating systems are limited to a maximum of 4GB of RAM regardless of how much RAM is physically installed. The graphics card's memory must also reside in the 4GB address space which reduces the available RAM further still. 64-bit operating systems impose no such limits and will make use of all available RAM, over and above the graphics card's memory.

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