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Computer Memory
The computer memory is a physical device used to store data or programs for use in a computer. Some types of computer memory include RAM (random access memory), ROM (read-only memory), and page cache.
4,434 Questions
How high should the ram be for your gaming computer?
It really depends upon your gaming style and the type of games you will be playing. If you're a hardcore gamer who likes to play games like COD, NFS, or anything similar, a 4GB RAM is good enough to have a lag-free gaming experience.
Cheers.
When CPU needs to access a memory location for read or write, it places an address on the address bus. In case of Read, data is meant to be read into Memory Data Register (MDR) and in case of Write, the data (to be written to memory) is put in the MDR.
After that CPU issues the Read or Write signal.
However, CPU needs to know when the desired memory function (Read or Write) has been completed..
This line back to the CPU saying that the operation is complete is sometimes called memory function complete (MFC).
In the meanwhile, the instruction or step that is executed by the CPU is known as Wait for Memory Function Completed (WMFC)
To summarize:
- To read (if you are a CPU):
- Put the desired memory address in the MAR.
- Assert the Read control line.
- Wait for the MFC line to be set to 1 by the main memory unit.
(Or wait for the appropriate amount of time, if there's no MFC line with your particular main memory unit you are using (rare these days).)
- Get the data out of the MDR.
- To write (again, if you are a CPU):
- Put the desired memory address in the MAR and put the desired data in the MDR.
- Assert the Write control line.
- Wait for the MFC line to be set to 1 by the main memory unit
How does cache size affect CPU performance?
The short answer: The more you have up to a reasonable point, the faster the performance.
Cache memory is a special, high-speed memory that is faster than DRAM. It is usually static memory, meaning that rather than being made of cells that contain a capacitor and a transistor, the cells contain 4-6 transistors. That costs a bit more and takes more current than DRAM, but it is fast. Since the cache is all in the CPUs these days, that also helps the speed.
Anyway, since the cache is so fast, the most used data gets held there. So rather than having to fetch it from memory, when the machine might be between clock cycles or the DRAM busy with a refresh cycle, the CPU gets it directly from the cache with less access penalties. So obviously, the more of this special memory is available, up to a certain point, the faster programs can run.
What is the use of paged memory?
Paged memory is used to extend the real physical memory of the machine by copying blocks of data from the memory to a drive. That way you can run many programs simultaneously even if they consume more memory than you physically have in your computer. When a program requires to access the data that is "paged to disk" the operating system will read this data into memory.
I'm not sure what Microsoft Troubleshooting Methology is, but you can check the logs and you might find something there.
What is Double sided PC memory?
Double sided PC memory is a RAM module that posses two edges (a rising and a falling edge) on which data is received/sent. An example is DDR and DDR2 RAM.
What is tiny and small memory?
In x86 family of CPUs, there are six memory models. Memory is managed in "chunks" (segment or page) of 64K words. To find a specific location, the CPU needs to know the segment it is in and how far down (the offset) it is from the beginning of the segment. In addition, the x86 CPUs support three types of pointers: * near pointers access data in the specified segment * far pointers can access data within a 1MB address space * huge pointers are a type of far pointer, but with specialized behavior So applications written for the x86 world had to specify a type of memory model which detailed how pointers work. Generally speaking, the rules are: If code is under 64KB... and data is under 64KB... use Tiny or Small model
If code is over 64KB... and data is under 64KB... use Medium model
If code is under 64KB... and data is over 64KB... use Compact model
If code is over 64KB... and data is over 64KB... use Large model
RAM (random access memory). this is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor. RAM is much faster to read from and write to than the other kinds of storage in a computer, the hard disk, floppy disk, and CD-ROM. However, the data in RAM stays there only as long as your computer is running. When you turn the computer off, RAM loses its data. When you turn your computer on again, your operating system and other files are once again loaded into RAM, usually from your hard disk.
What are the characteristics of a memory module?
The characteristics are:
1) Total memory size (in Megabytes or Gigabytes)
2) Memory Speed (in MHz)
3) Memory Timing (in nanoseconds)
4) Memory architecture (Rambus, DDR2, DDR3 etc.)
5) Parity presence (parity checking or not)
6) Package size (SIMM, DIMM, SO-DIMM etc.)
Other factors such as the presence of a heat sink, chips on both sides or only one side of the board may be important when using with certain systems.
How fast is the fastest USB memory?
Corsair Flash Voyager GT
* Interface(s): Hi-Speed USB * Dimensions: 3.05" x 0.95" x 0.5" * Capacity: Up to 16GB * Read transfer speed: 34MB/s * Write transfer speed: 28MB/s * Bundled software: TrueCrypt * Supported platform(s): Windows 2000 / XP * Warranty: Ten years * Released date: March 2007
MjW
In a operational computer where is the most reliable hard-drive set up information found?
I am not sure exactly what you mean but I'll take a stab at it. Usually there is not much you can to to improve or alter the reliability of your hard drive. When you plug the drive into a system as long as everything is set to the right mode the drive shows up and it works. On prebuilt systems there isn't any options relating to your hard drive that you can change. There may be Windows tweaks that you could try but I'm not familiar with them and I wouldn't recommend it as the manufacturers set the drives up for proper operation initially.
Other things you may be interested in are raid arrays if you are looking for reliable hard drive setups. These don't prevent data loss in the sense that they can protect against viruses, etc, but can sometimes prevent data loss in the event of a mechanical drive failure. This is dependent on the raid level that you use, as well as the raid controller. There is no shortage of information on this subject if you do a search for raid array.
I would also add that making sure your drives are not mounted close together and properly mounted will help tremendously. Sandwiching multiple hard drives together creates too much trapped heat which can lead to drive failure. Make sure a fan is blowing over them if possible. Also making sure a drive is mounted properly in terms of screwing it inside a computer case is important because moving a drive while it is working can lead to a hard drive head scraping the platters and causing the drive to be ruined. While the computer is off, though, the heads are "parked' and can do no harm to my knowledge.
The final thing to be aware of is S.M.A.R.T data that is integrated into modern hard drives. This provides diagnostic information relating to the health and reliability of your drives. Your PC's bios must support this and having a program such as Hard Drive Inspector (Altrixsoft) can help too because it has access to the SMART data and can read information relating to temperatures, bad sectors, and other information used to predict a pending drive failure.
Goto http://en.wikipedia.org/wiki/DDR2_SDRAM. Scroll down a bit til you see chips and modules. But for those that are less computer literate: DDR2: the type of memory. -400 -533, etc.: the speed of that memory. The numbers represent a certain specification within that type of memory. Higher number=faster. So if your Motherboard supports both and youre trying to decide which to buy, get the 533. It's a bit more expensive, but you'll get much better performance.
Which two types of memory packaging are used chiefly in portable computing devices?
sodimm and micro dimm
I was considering this: asus XG_Station as a solution but I would like to know if there is any that can actually adapt to improve my graphics card, personally I don't want a new laptop if I can improve my current laptop. The Asus x58l has a vga slot so I though with a dvi adapter it may work.
Gerovital (also called Aslavital)
How do you erase files from memory stick on Dell computer?
1. select the file
2. hit the delete key
and that's it
Virtual memory is hardware that the computer uses to load the operating system and run all of the programs. It is stated that the more memory that the computer has, the faster the programs will run.
Which desktops are compatible with the 2GB DDR2 RAM?
There are many different desktops that are compatible with the 2GB DDR2 RAM. Some desktops that are compatible with this ram include the Dell 530 and Dell 531S models. You can get more information about DDR2 SDRAM at the Wikipedia.
