Why not speedup your computer by adding more memory, make sure you buy the correct memory.
DDR3 Memory (240-pins) is the latest memory standard taking over the previous DDR2 and DDR2 standards with faster specification of memory transfers. Although DDR3 comes with 240-pins the same as DDR2 the notch is in a different place so people can’t install the wrong type. DDR3 is not backward compatible with DDR2 in addition to the notch the voltage runs at a lower 1.5V than DDR2 1.8V.
To use DDR3 memory, your system motherboard must have 240-pin DIMM slots and a DDR3-enabled chipset. This is because a DDR3 SDRAM DIMM will not fit into a standard DDR2 DIMM socket or a DDR DIMM socket.
Crucial USA Link
Crucial US Memory Finder Tool [Go]
Crucial UK Link
Crucial UK Memory Finder Tool [Go]
Offtek -
Offtek provide a wide range of products including server and router memory alongside standard memory and removable flash media for all UK based customers.
How can you tell the difference between a DDR3 socket and a DDR2 socket?
Well on first glance it is difficult to tell the only real way is to align the memory module you want to install against the socket and visually check that the “key” or pins align exactly with the socket key.
Never try to force a module into a socket this could result in damage to your motherboard or the memory itself. Memory should always align correctly and then be lined up and if it matches the key firmly pressed into position.
SDRAM Memory (168-pin DIMMS). This standard was introduced in the late 1990's originally available with a bus speed of 66Mhz. This then developed into 100Mhz, and 133Mhz speeds.
This type of memory replaced the EDO SIMM standard. 168-pin DIMMS were the first standard whereby modules could be installed singly.
Compatible motherboards were fixed to one of the three bus speeds, but allowed you to use 133Mhz memory in a system with other modules of 100Mhz but obviously the 133Mhz module could only work at the limit of 100Mhz defined by the motherboards chipset.
RDRAM Memory (184-pin RIMMS) This type of memory was originally the only standard supported by Intel Pentium 4 motherboards.
Concerns from other vendors that Intel and the memory maker Rambus could control the memory market, lead to DDR Memory being introduced. This forced Intel to abandon exclusive support of RDRAM and lead to DDR/DDR2 support.
This is older type of memory which needs to be used in pairs of the same rated memory eg 2 x 8,16,32,64,128 modules. It can be quite expensive to purchase compared to the now more mass produce newer lines.
Looking for Laptop Memory Section?
What is Dual-Channel Memory?
Unsure what type of memory you need? Use the Memory Advisor Tool [here] Or lookup the type of memory your Motherboard uses in your manual.
Online Store Links for Memory:
Crucial USA Link
Crucial US Memory Finder Tool [Go]
Crucial UK Link
Crucial UK Memory Finder Tool [Go]
Offtek -
Offtek provide a wide range of products including server and router memory alongside standard memory and removable flash media for all UK based customers.
