Mike Walsh wrote in
:

OEM memory is notoriously expensive. You can get the same performance
for a lot less money by buying e.g. Kingston memory on sale at your
local big box electronics store.


I'll second this and add:

Try the different manufacturers websites. They frequently have a
configuration tool to help you find the correct memory sticks based on
your motherboard model number or your system model number. Here's a few
links:

http://www.samsung.com/Products/Semiconductor/DRAM/
http://www.ocztechnology.com/
http://www.mushkin.com/epages/mushkin.storefront
http://www.legacyelectronics.com/
http://www.kingston.com/
http://www.gskill.com.tw/
http://www.geilusa.com/
http://www.crucial.com/
http://www.corsairmicro.com/

If you need information on your motherboard/system/memory try CPU-Z or
SiSoftware Sandra from he

http://www.cpuid.com/
http://www.sisoftware.net/