41-ComptIA A+ 220-901 (Single sided vs Double sided ) by IT Training and Tutorials | English
Single Sided RAM Is basically just the Ram modules mounted only on one side of the stick.
Double Sided RAM Is similar just that the RAM Modules are mounted on both sides.
Single sided RAM normally cannot exceed 512MB Whereas Double Sided RAM normally cannot exceed 1GB.
Usually 1GB Sticks are Double sided, as well as 512MB sticks.
Single Sided RAM Modules are thinner by a 1mm and there is one side of the PCB which has no modules mounted on.
However with the newer 2GB Double sided sticks, there may as well be 1GB single sided RAM Modules.
Either way, single sided and double sided wont even give you a hunch on how the RAM is going to perform *_*.
Dual Channel is DIFFERENT, Nothing to do with the physical attribute of the Stick itself. Dual Channel RAM bascially is when two Modules are mounted in two keyed by colour RAM Slots. Usually they are seperated by a small gap.They Must be mounted like this.
Slot 1: [DDRII Kingston 512MB]
Slot 2: [Empty---------------]
Slot 3: [DDRII Kingston 512MB]
Slot 4: [Empty---------------]
The pairs MUST be identical. The Red slots can be populated with another pair of RAM modules which have to be identical as well, however not with the blue slots.
Usually when buying RAM you must consider what motherboard you are using, for example if your motherboard does not support dual channel, it is better off buying just one single stick of 1GB, if it does two 512MB are better.
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