RAM: TWO DDR2 of Different size but same bus

[donrocker]

hello everyone i want to upgrade my Kingston 1 GB 800 Mhz PC2-6400...intel core 2 duo DG31GL have only 2 slots....can i add another ram of 2 GB of Same bus speed with a different brand...to run my CPU in a dual channel????? with a good speed using full memory? plz helppppp!!

 

[fireberd]

The max for that board, according to the Intel specs, is 4GB. You can add another memory module and it does not have to be the same brand. However, you need to get memory that is compatible with that motherboard and at least the same speed. Two memory modules with different speed and the memory will run at the speed of the slowest module.

HERE is the Crucial memory listing for that motherboard. Note that this board requires 1.8 volt memory. Much of the current memory available is 2.2 volt so be careful when you get the extra memory.

 

[Dwarf]

For optimal dual-channel performance, you need to install identical memory sticks into each channel. Ideally, these should be from the same manufacturer and be the same model/capacity, but so long as the various memory timing parameters are the same you should be OK.

Incidentally, some boards will allow a form of dual-channel known as asynchronous-dual-channel (a mixture of dual-channel and single-channel) if sticks of different capacities are used, although the performance will be less than that when a matched pair is used. For a 1GB and a 2GB stick this will be as follows: Both the 1GB stick and 1GB of the 2GB stick will operate in dual-channel mode. The other 1GB of the 2GB stick will operate in single-channel mode.

It should also be pointed out that some boards will only enable dual-channel mode if the amount of memory in each channel is identical and if the amount in Channel A Slot 0 is the same as Channel B Slot 0 etc. In other words, you can have 4 slots and 6GB of RAM comprising 2 x 1GB and 2 x 2GB, but you will only get dual-channel operation if both channels A and B have the same amount of memory and both A/Slot 0 = B/SLot 0 and A/Slot 1 = B/Slot 1.

 

[donrocker]

Got it..

thnxx fireberd and dwarf

@Dwarf if i add 2 gb to 1 gb existing...1, 1 of both would be in dual channel and the rest of the 1 gb would be consumed or not??? and what would u suggest shud i get identical 1gb for increased performance or 2GB which wud be more efficient????wud make my PC more speedy??