Finding a DDR SDRAM for Your PC
DDR SDRAM is the first-generation double rate synchronous dynamic random access memory. The modules rate based on their maximum speeds, expressing either in clocks per cycle (MHz) or by the throughput in Mbps. Common speeds for DDR 1 include PC-1600 (200 MHz), PC-2100 (266 MHz), and PC-2700 (333 MHz), but you can also access other speeds.
What Is a 512 MB DDR 333MHz PC-2700 RAM?
This is a 512 MB DDR memory module with a maximum clock rate of 333 MHz and a theoretical peak transfer rate of 2700 Mbps. Both numbers represent the same frequency, just expressing in different units. Depending on your PC build, you can get both a desktop memory (DIMM) and laptop memory (SO-DIMM) 512 MB DDR 333 MHz (PC-2700) RAM. DDR 1 DIMM modules have 184 pins, while DDR 1 SO-DIMMs have 200 pins.
What Factors Should You Consider When Getting a DDR Computer Memory?
Before selecting your desktop or laptop memory, there are a number of factors you should look at.
- RAM capacity: The size of your memory modules will depend on your performance needs. Typically, the larger the memory, the faster your computer will be. The system will boot faster and your programs will load much quicker.
- Memory speed: Expressed in MHz, RAM speed shows the rate at which the memory modules transfer data. Generally, the faster the speed the better the memory module. However, when selecting computer memory, you should determine whether your motherboard can support your preferred speeds.
- Interface: Desktop computers typically use full-sized memory modules (DIMMs). Laptop computers, on the other hand, use reduced-size memory modules known as small outline DIMMs (SO-DIMMs).
- CAS latency: Timings (latency) is the delay or amount of time the processor takes to access data stored in the RAM. Typically, lower numbers mean better performance. CL2 rated modules wait for two clock cycles before sending data while CL3 modules take three clock cycles.
- ECC (error-correcting code): Is a method of protecting the reliability of a memory which enables the system to correct single-bit errors and notifies you of larger errors. ECC modules ensure maximum data security and are recommended for use in workstations, servers, and in supported desktops.
What Steps Should You Follow When Installing Computer Memory?
Installing computer memory is an easy, straightforward but delicate process. Before working with any memory modules, make sure your computer is turned off and unplugged from the AC outlet. You should also handle the memory modules with care to avoid causing damage to the chips, connectors, or circuitry.
To install a RAM module, follow the following steps:
- Open the locking tabs on the PC sockets.
- Line up the module connectors with the sockets.
- Once the connectors are lined, push the module into the socket.
- Lastly, ensure that the swivel locks are closed.