Although the memory can be installed one module at a time, the best performance comes from using matched pairs of modules.
|Total Capacity||4GB kit (2GBx2)|
|Specs||DDR2 PC2-6400 CL=6 Unbuffered NON-ECC DDR2-800 1.8V 256Meg x 64 |
|Bullet Features||Increases system performance|
A dual inline memory module (DIMM) consists of a number of memory components (usually black) that are attached to a printed circuit board (usually green). The gold pins on the bottom of the DIMM provide a connection between the module and a socket on a larger printed circuit board. The pins on the front and back of a DIMM are not connected to each other.
240-pin DIMMs are used to provide DDR2 SDRAM memory for desktop computers. DDR2 is a leading-edge generation of memory with an improved architecture that allows it to transmit data very fast.
Each 240-pin DIMM provides a 64-bit data path (72-bit for ECC or registered or Fully Buffered modules). (The Ballistix™ and Ballistix Tracer™ high-performance memory do not come in 72-bit or registered modules.)
To use DDR2 memory, your system motherboard must have 240-pin DIMM slots and a DDR2-enabled chipset. A DDR2 SDRAM DIMM will not fit into a standard SDRAM DIMM socket or a DDR DIMM socket.
The number of black components on a 240-pin DIMM can vary, but it always has 120 pins on the front and 120 pins on the back, for a total of 240. 240-pin DIMMs are approximately 5.25 inches long and 1.18 inches high, though the heights can vary. While 240-pin DDR2 DIMMs, 184-pin DDR DIMMs, and 168-pin DIMMs are approximately the same size, 240-pin DIMMs and 184-pin DIMMs have only one notch within the row of pins. The notch in a 240-pin DDR2 DIMM is closer toward the center of the module.
Do you have questions about this product?
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Q:what does CL=5 / CL=6 mean?
A:CL refers to the Cas Latency of a module and tells us how many clock cycles pass between data being transferred. The higher the CL the more clock cycles pass. This feature is not as important as the amount of RAM installed and the speed of the RAM.
Q:is there support for Serial Presence Detect (SPD)
A:Serial Presence Detect (SPD) is a memory hardware feature that makes it possible for the computer to know what memory is present, and what timings to use to access the memory.
Q:does this memory module support serial presence detect (SPD)data structure?
Q:What is the difference between DDR2 PC2-6400 and DDR2 PC2-8500 memory modules?
A:PC2-8500 RAM is simply the faster of the two speeds
Q:my emachine EL1300G-01W has only one slot for RAM. If I buy this 4GB kit will I pull out the 2gb card and put in this new card?
A:This system should have 2 memory slots according to our records. If however you only have one slot then you would need to purchase a single 2GB module instead of a kit as this comprises of two modules.
A:Yes, this memory kit will be fully compatible with the Optiplex 740.
Q:Hi my board supports both pc2-6400 and pc2-5300 , what is the difference between the 2 ? speed ? reliability ? overclocking ? I havent been keeping up with all the newer technology , and doubt I would overclock anyways . I do want the highest speed and reliability and any help would be appreciated , thanks .
A:The difference is in the frequency. PC2-6400 runs at 800MHz and PC2-5300 runs at 667MHz. Both speeds are compatible with your motherboard.
Q:can i use this memory type for my Dell Dimension 8250 desktop?
A:No, unfortunately not. Your computer uses RDRAM, also known as Rambus(R) memory, on 184-pin RIMMs. Unfortunately, Crucial does not carry RDRAM. For further information on Rambus(R) RDRAM, please visit our FAQs at http://www.crucial.com/kb/answer.aspx?qid=3531
Q:who manufactures this product? what series? what model? and Type?
A:Crucial is the manufacturer of our product. Below is a link with the compatible memory for your system.
Q:If I want to replace a defective memory card and upgrade should I buy 2 of these sets so I'm replacing all 4 cards at once? For the price that seems to be the way to go.
A:For best performance, you do want to install in matched pairs. If you are wanting to max the system memory, and run at best performance for your RAM, installing two of these kits would be the best way to go.