SimpleTech 1GB DC DDR PC4000
 

The SimpleTech Nitro Series Dual Channel DDR500 memory module will meet
the needs of most enthusiasts. This pair of DDR 500 is one of the fastest
frequencies RAM of the DDR memory range. These dual channels RAM are able
to run at tight timing at 2-2-2-5 which is the best and basic requirement
for a good memory module. Furthermore, by relax the timing to 3-4-4-8, the
RAM was able to hit 275.3 MHz which is equal to DDR 550. That was an
excellent result.

Link :
http://www.techniz.co.uk/modules.php...content&id=223